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HBASE-18060 Backport to branch-1 HBASE-9774 HBase native metrics and metric collection for coprocessors 

Signed-off-by: Andrew Purtell <apurtell@apache.org>
This commit is contained in:
Vincent 2017-05-18 15:39:29 -07:00 committed by Andrew Purtell
parent f2ba52ac45
commit a3c3f1012d
78 changed files with 5483 additions and 128 deletions
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10
hbase-assembly/pom.xml
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@ -203,6 +203,16 @@
<artifactId>hbase-testing-util</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-metrics-api</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-metrics</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-resource-bundle</artifactId>

224
hbase-common/src/main/java/org/apache/hadoop/hbase/util/LongAdder.java Normal file
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/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Written by Doug Lea with assistance from members of JCP JSR-166
* Expert Group and released to the public domain, as explained at
* http://creativecommons.org/publicdomain/zero/1.0/
*/
package org.apache.hadoop.hbase.util;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
/**
* One or more variables that together maintain an initially zero
* {@code long} sum. When updates (method {@link #add}) are contended
* across threads, the set of variables may grow dynamically to reduce
* contention. Method {@link #sum} (or, equivalently, {@link
* #longValue}) returns the current total combined across the
* variables maintaining the sum.
*
* <p>This class is usually preferable to {@link AtomicLong} when
* multiple threads update a common sum that is used for purposes such
* as collecting statistics, not for fine-grained synchronization
* control. Under low update contention, the two classes have similar
* characteristics. But under high contention, expected throughput of
* this class is significantly higher, at the expense of higher space
* consumption.
*
* <p>This class extends {@link Number}, but does <em>not</em> define
* methods such as {@code equals}, {@code hashCode} and {@code
* compareTo} because instances are expected to be mutated, and so are
* not useful as collection keys.
*
* <p><em>jsr166e note: This class is targeted to be placed in
* java.util.concurrent.atomic.</em>
*
* @since 1.8
*/
@InterfaceAudience.Public
@InterfaceStability.Stable
public class LongAdder extends Striped64 implements Serializable {
private static final long serialVersionUID = 7249069246863182397L;
/**
* Version of plus for use in retryUpdate
*/
final long fn(long v, long x) { return v + x; }
/**
* Creates a new adder with initial sum of zero.
*/
public LongAdder() {
}
/**
* Adds the given value.
*
* @param x the value to add
*/
public void add(long x) {
Cell[] as; long b, v; int[] hc; Cell a; int n;
if ((as = cells) != null || !casBase(b = base, b + x)) {
boolean uncontended = true;
if ((hc = threadHashCode.get()) == null ||
as == null || (n = as.length) < 1 ||
(a = as[(n - 1) & hc[0]]) == null ||
!(uncontended = a.cas(v = a.value, v + x)))
retryUpdate(x, hc, uncontended);
}
}
/**
* Equivalent to {@code add(1)}.
*/
public void increment() {
add(1L);
}
/**
* Equivalent to {@code add(-1)}.
*/
public void decrement() {
add(-1L);
}
/**
* Returns the current sum. The returned value is <em>NOT</em> an
* atomic snapshot; invocation in the absence of concurrent
* updates returns an accurate result, but concurrent updates that
* occur while the sum is being calculated might not be
* incorporated.
*
* @return the sum
*/
public long sum() {
long sum = base;
Cell[] as = cells;
if (as != null) {
int n = as.length;
for (int i = 0; i < n; ++i) {
Cell a = as[i];
if (a != null)
sum += a.value;
}
}
return sum;
}
/**
* Resets variables maintaining the sum to zero. This method may
* be a useful alternative to creating a new adder, but is only
* effective if there are no concurrent updates. Because this
* method is intrinsically racy, it should only be used when it is
* known that no threads are concurrently updating.
*/
public void reset() {
internalReset(0L);
}
/**
* Equivalent in effect to {@link #sum} followed by {@link
* #reset}. This method may apply for example during quiescent
* points between multithreaded computations. If there are
* updates concurrent with this method, the returned value is
* <em>not</em> guaranteed to be the final value occurring before
* the reset.
*
* @return the sum
*/
public long sumThenReset() {
long sum = base;
Cell[] as = cells;
base = 0L;
if (as != null) {
int n = as.length;
for (int i = 0; i < n; ++i) {
Cell a = as[i];
if (a != null) {
sum += a.value;
a.value = 0L;
}
}
}
return sum;
}
/**
* Returns the String representation of the {@link #sum}.
* @return the String representation of the {@link #sum}
*/
public String toString() {
return Long.toString(sum());
}
/**
* Equivalent to {@link #sum}.
*
* @return the sum
*/
public long longValue() {
return sum();
}
/**
* Returns the {@link #sum} as an {@code int} after a narrowing
* primitive conversion.
*/
public int intValue() {
return (int)sum();
}
/**
* Returns the {@link #sum} as a {@code float}
* after a widening primitive conversion.
*/
public float floatValue() {
return (float)sum();
}
/**
* Returns the {@link #sum} as a {@code double} after a widening
* primitive conversion.
*/
public double doubleValue() {
return (double)sum();
}
private void writeObject(ObjectOutputStream s) throws IOException {
s.defaultWriteObject();
s.writeLong(sum());
}
private void readObject(ObjectInputStream s)
throws IOException, ClassNotFoundException {
s.defaultReadObject();
busy = 0;
cells = null;
base = s.readLong();
}
}

356
hbase-common/src/main/java/org/apache/hadoop/hbase/util/Striped64.java Normal file
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/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Written by Doug Lea with assistance from members of JCP JSR-166
* Expert Group and released to the public domain, as explained at
* http://creativecommons.org/publicdomain/zero/1.0/
*/
package org.apache.hadoop.hbase.util;
import java.util.Random;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
/**
* A package-local class holding common representation and mechanics
* for classes supporting dynamic striping on 64bit values. The class
* extends Number so that concrete subclasses must publicly do so.
*/
@InterfaceAudience.Private
abstract class Striped64 extends Number {
/*
* This class maintains a lazily-initialized table of atomically
* updated variables, plus an extra "base" field. The table size
* is a power of two. Indexing uses masked per-thread hash codes.
* Nearly all declarations in this class are package-private,
* accessed directly by subclasses.
*
* Table entries are of class Cell; a variant of AtomicLong padded
* to reduce cache contention on most processors. Padding is
* overkill for most Atomics because they are usually irregularly
* scattered in memory and thus don't interfere much with each
* other. But Atomic objects residing in arrays will tend to be
* placed adjacent to each other, and so will most often share
* cache lines (with a huge negative performance impact) without
* this precaution.
*
* In part because Cells are relatively large, we avoid creating
* them until they are needed. When there is no contention, all
* updates are made to the base field. Upon first contention (a
* failed CAS on base update), the table is initialized to size 2.
* The table size is doubled upon further contention until
* reaching the nearest power of two greater than or equal to the
* number of CPUS. Table slots remain empty (null) until they are
* needed.
*
* A single spinlock ("busy") is used for initializing and
* resizing the table, as well as populating slots with new Cells.
* There is no need for a blocking lock; when the lock is not
* available, threads try other slots (or the base). During these
* retries, there is increased contention and reduced locality,
* which is still better than alternatives.
*
* Per-thread hash codes are initialized to random values.
* Contention and/or table collisions are indicated by failed
* CASes when performing an update operation (see method
* retryUpdate). Upon a collision, if the table size is less than
* the capacity, it is doubled in size unless some other thread
* holds the lock. If a hashed slot is empty, and lock is
* available, a new Cell is created. Otherwise, if the slot
* exists, a CAS is tried. Retries proceed by "double hashing",
* using a secondary hash (Marsaglia XorShift) to try to find a
* free slot.
*
* The table size is capped because, when there are more threads
* than CPUs, supposing that each thread were bound to a CPU,
* there would exist a perfect hash function mapping threads to
* slots that eliminates collisions. When we reach capacity, we
* search for this mapping by randomly varying the hash codes of
* colliding threads. Because search is random, and collisions
* only become known via CAS failures, convergence can be slow,
* and because threads are typically not bound to CPUS forever,
* may not occur at all. However, despite these limitations,
* observed contention rates are typically low in these cases.
*
* It is possible for a Cell to become unused when threads that
* once hashed to it terminate, as well as in the case where
* doubling the table causes no thread to hash to it under
* expanded mask. We do not try to detect or remove such cells,
* under the assumption that for long-running instances, observed
* contention levels will recur, so the cells will eventually be
* needed again; and for short-lived ones, it does not matter.
*/
/**
* Padded variant of AtomicLong supporting only raw accesses plus CAS.
* The value field is placed between pads, hoping that the JVM doesn't
* reorder them.
*
* JVM intrinsics note: It would be possible to use a release-only
* form of CAS here, if it were provided.
*/
static final class Cell {
volatile long p0, p1, p2, p3, p4, p5, p6;
volatile long value;
volatile long q0, q1, q2, q3, q4, q5, q6;
Cell(long x) { value = x; }
final boolean cas(long cmp, long val) {
return UNSAFE.compareAndSwapLong(this, valueOffset, cmp, val);
}
// Unsafe mechanics
private static final sun.misc.Unsafe UNSAFE;
private static final long valueOffset;
static {
try {
UNSAFE = getUnsafe();
Class<?> ak = Cell.class;
valueOffset = UNSAFE.objectFieldOffset
(ak.getDeclaredField("value"));
} catch (Exception e) {
throw new Error(e);
}
}
}
/**
* ThreadLocal holding a single-slot int array holding hash code.
* Unlike the JDK8 version of this class, we use a suboptimal
* int[] representation to avoid introducing a new type that can
* impede class-unloading when ThreadLocals are not removed.
*/
static final ThreadLocal<int[]> threadHashCode = new ThreadLocal<int[]>();
/**
* Generator of new random hash codes
*/
static final Random rng = new Random();
/** Number of CPUS, to place bound on table size */
static final int NCPU = Runtime.getRuntime().availableProcessors();
/**
* Table of cells. When non-null, size is a power of 2.
*/
transient volatile Cell[] cells;
/**
* Base value, used mainly when there is no contention, but also as
* a fallback during table initialization races. Updated via CAS.
*/
transient volatile long base;
/**
* Spinlock (locked via CAS) used when resizing and/or creating Cells.
*/
transient volatile int busy;
/**
* Package-private default constructor
*/
Striped64() {
}
/**
* CASes the base field.
*/
final boolean casBase(long cmp, long val) {
return UNSAFE.compareAndSwapLong(this, baseOffset, cmp, val);
}
/**
* CASes the busy field from 0 to 1 to acquire lock.
*/
final boolean casBusy() {
return UNSAFE.compareAndSwapInt(this, busyOffset, 0, 1);
}
/**
* Computes the function of current and new value. Subclasses
* should open-code this update function for most uses, but the
* virtualized form is needed within retryUpdate.
*
* @param currentValue the current value (of either base or a cell)
* @param newValue the argument from a user update call
* @return result of the update function
*/
abstract long fn(long currentValue, long newValue);
/**
* Handles cases of updates involving initialization, resizing,
* creating new Cells, and/or contention. See above for
* explanation. This method suffers the usual non-modularity
* problems of optimistic retry code, relying on rechecked sets of
* reads.
*
* @param x the value
* @param hc the hash code holder
* @param wasUncontended false if CAS failed before call
*/
final void retryUpdate(long x, int[] hc, boolean wasUncontended) {
int h;
if (hc == null) {
threadHashCode.set(hc = new int[1]); // Initialize randomly
int r = rng.nextInt(); // Avoid zero to allow xorShift rehash
h = hc[0] = (r == 0) ? 1 : r;
}
else
h = hc[0];
boolean collide = false; // True if last slot nonempty
for (;;) {
Cell[] as; Cell a; int n; long v;
if ((as = cells) != null && (n = as.length) > 0) {
if ((a = as[(n - 1) & h]) == null) {
if (busy == 0) { // Try to attach new Cell
Cell r = new Cell(x); // Optimistically create
if (busy == 0 && casBusy()) {
boolean created = false;
try { // Recheck under lock
Cell[] rs; int m, j;
if ((rs = cells) != null &&
(m = rs.length) > 0 &&
rs[j = (m - 1) & h] == null) {
rs[j] = r;
created = true;
}
} finally {
busy = 0;
}
if (created)
break;
continue; // Slot is now non-empty
}
}
collide = false;
}
else if (!wasUncontended) // CAS already known to fail
wasUncontended = true; // Continue after rehash
else if (a.cas(v = a.value, fn(v, x)))
break;
else if (n >= NCPU || cells != as)
collide = false; // At max size or stale
else if (!collide)
collide = true;
else if (busy == 0 && casBusy()) {
try {
if (cells == as) { // Expand table unless stale
Cell[] rs = new Cell[n << 1];
for (int i = 0; i < n; ++i)
rs[i] = as[i];
cells = rs;
}
} finally {
busy = 0;
}
collide = false;
continue; // Retry with expanded table
}
h ^= h << 13; // Rehash
h ^= h >>> 17;
h ^= h << 5;
hc[0] = h; // Record index for next time
}
else if (busy == 0 && cells == as && casBusy()) {
boolean init = false;
try { // Initialize table
if (cells == as) {
Cell[] rs = new Cell[2];
rs[h & 1] = new Cell(x);
cells = rs;
init = true;
}
} finally {
busy = 0;
}
if (init)
break;
}
else if (casBase(v = base, fn(v, x)))
break; // Fall back on using base
}
}
/**
* Sets base and all cells to the given value.
*/
final void internalReset(long initialValue) {
Cell[] as = cells;
base = initialValue;
if (as != null) {
int n = as.length;
for (int i = 0; i < n; ++i) {
Cell a = as[i];
if (a != null)
a.value = initialValue;
}
}
}
// Unsafe mechanics
private static final sun.misc.Unsafe UNSAFE;
private static final long baseOffset;
private static final long busyOffset;
static {
try {
UNSAFE = getUnsafe();
Class<?> sk = Striped64.class;
baseOffset = UNSAFE.objectFieldOffset
(sk.getDeclaredField("base"));
busyOffset = UNSAFE.objectFieldOffset
(sk.getDeclaredField("busy"));
} catch (Exception e) {
throw new Error(e);
}
}
/**
* Returns a sun.misc.Unsafe. Suitable for use in a 3rd party package.
* Replace with a simple call to Unsafe.getUnsafe when integrating
* into a jdk.
*
* @return a sun.misc.Unsafe
*/
private static sun.misc.Unsafe getUnsafe() {
try {
return sun.misc.Unsafe.getUnsafe();
} catch (SecurityException tryReflectionInstead) {}
try {
return java.security.AccessController.doPrivileged
(new java.security.PrivilegedExceptionAction<sun.misc.Unsafe>() {
public sun.misc.Unsafe run() throws Exception {
Class<sun.misc.Unsafe> k = sun.misc.Unsafe.class;
for (java.lang.reflect.Field f : k.getDeclaredFields()) {
f.setAccessible(true);
Object x = f.get(null);
if (k.isInstance(x))
return k.cast(x);
}
throw new NoSuchFieldError("the Unsafe");
}});
} catch (java.security.PrivilegedActionException e) {
throw new RuntimeException("Could not initialize intrinsics",
e.getCause());
}
}
}

148
hbase-examples/src/main/java/org/apache/hadoop/hbase/coprocessor/example/ExampleMasterObserverWithMetrics.java Normal file
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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.coprocessor.example;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.coprocessor.BaseMasterObserver;
import org.apache.hadoop.hbase.coprocessor.MasterCoprocessorEnvironment;
import org.apache.hadoop.hbase.coprocessor.ObserverContext;
import org.apache.hadoop.hbase.metrics.Counter;
import org.apache.hadoop.hbase.metrics.Gauge;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.metrics.Timer;
/**
* An example coprocessor that collects some metrics to demonstrate the usage of exporting custom
* metrics from the coprocessor.
*
* <p>
* These metrics will be available through the regular Hadoop metrics2 sinks (ganglia, opentsdb,
* etc) as well as JMX output. You can view a snapshot of the metrics by going to the http web UI
* of the master page, something like http://mymasterhost:16010/jmx
* </p>
* @see ExampleRegionObserverWithMetrics
*/
public class ExampleMasterObserverWithMetrics extends BaseMasterObserver {
private static final Log LOG = LogFactory.getLog(ExampleMasterObserverWithMetrics.class);
/** This is the Timer metric object to keep track of the current count across invocations */
private Timer createTableTimer;
private long createTableStartTime = Long.MIN_VALUE;
/** This is a Counter object to keep track of disableTable operations */
private Counter disableTableCounter;
/** Returns the total memory of the process. We will use this to define a gauge metric */
private long getTotalMemory() {
return Runtime.getRuntime().totalMemory();
}
/** Returns the max memory of the process. We will use this to define a gauge metric */
private long getMaxMemory() {
return Runtime.getRuntime().maxMemory();
}
@Override
public void preCreateTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
HTableDescriptor desc, HRegionInfo[] regions) throws IOException {
super.preCreateTable(ctx, desc, regions);
// we rely on the fact that there is only 1 instance of our MasterObserver. We keep track of
// when the operation starts before the operation is executing.
this.createTableStartTime = System.currentTimeMillis();
}
@Override
public void postCreateTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
HTableDescriptor desc, HRegionInfo[] regions) throws IOException {
super.postCreateTable(ctx, desc, regions);
if (this.createTableStartTime > 0) {
long time = System.currentTimeMillis() - this.createTableStartTime;
LOG.info("Create table took: " + time);
// Update the timer metric for the create table operation duration.
createTableTimer.updateMillis(time);
}
}
@Override
public void preDisableTable(ObserverContext<MasterCoprocessorEnvironment> ctx, TableName tableName) throws IOException {
super.preDisableTable(ctx, tableName);
// Increment the Counter for disable table operations
this.disableTableCounter.increment();
}
@Override
public void start(CoprocessorEnvironment env) throws IOException {
super.start(env);
// start for the MasterObserver will be called only once in the lifetime of the
// server. We will construct and register all metrics that we will track across method
// invocations.
if (env instanceof MasterCoprocessorEnvironment) {
// Obtain the MetricRegistry for the Master. Metrics from this registry will be reported
// at the master level per-server.
MetricRegistry registry =
((MasterCoprocessorEnvironment) env).getMetricRegistryForMaster();
if (createTableTimer == null) {
// Create a new Counter, or get the already registered counter.
// It is much better to only call this once and save the Counter as a class field instead
// of creating the counter every time a coprocessor method is invoked. This will negate
// any performance bottleneck coming from map lookups tracking metrics in the registry.
createTableTimer = registry.timer("CreateTable");
// on stop(), we can remove these registered metrics via calling registry.remove(). But
// it is not needed for coprocessors at the master level. If coprocessor is stopped,
// the server is stopping anyway, so there will not be any resource leaks.
}
if (disableTableCounter == null) {
disableTableCounter = registry.counter("DisableTable");
}
// Register a custom gauge. The Gauge object will be registered in the metrics registry and
// periodically the getValue() is invoked to obtain the snapshot.
registry.register("totalMemory", new Gauge<Long>() {
@Override
public Long getValue() {
return getTotalMemory();
}
});
// Register a custom gauge (Supplier converted into Gauge)
registry.register("maxMemory", new Gauge<Long>() {
@Override
public Long getValue() {
return getMaxMemory();
}
});
}
}
}

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hbase-examples/src/main/java/org/apache/hadoop/hbase/coprocessor/example/ExampleRegionObserverWithMetrics.java Normal file
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/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.coprocessor.example;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.ThreadLocalRandom;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.coprocessor.BaseRegionObserver;
import org.apache.hadoop.hbase.coprocessor.ObserverContext;
import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
import org.apache.hadoop.hbase.metrics.Counter;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.metrics.Timer;
/**
* An example coprocessor that collects some metrics to demonstrate the usage of exporting custom
* metrics from the coprocessor.
* <p>
* These metrics will be available through the regular Hadoop metrics2 sinks (ganglia, opentsdb,
* etc) as well as JMX output. You can view a snapshot of the metrics by going to the http web UI
* of the regionserver page, something like http://myregionserverhost:16030/jmx
* </p>
*
* @see ExampleMasterObserverWithMetrics
*/
public class ExampleRegionObserverWithMetrics extends BaseRegionObserver {
private Counter preGetCounter;
private Timer costlyOperationTimer;
@Override
public void preGetOp(ObserverContext<RegionCoprocessorEnvironment> e, Get get, List<Cell> results)
throws IOException {
super.preGetOp(e, get, results);
// Increment the Counter whenever the coprocessor is called
preGetCounter.increment();
}
@Override
public void postGetOp(ObserverContext<RegionCoprocessorEnvironment> e, Get get,
List<Cell> results) throws IOException {
super.postGetOp(e, get, results);
// do a costly (high latency) operation which we want to measure how long it takes by
// using a Timer (which is a Meter and a Histogram).
long start = System.nanoTime();
try {
performCostlyOperation();
} finally {
costlyOperationTimer.updateNanos(System.nanoTime() - start);
}
}
private void performCostlyOperation() {
try {
// simulate the operation by sleeping.
Thread.sleep(ThreadLocalRandom.current().nextLong(100));
} catch (InterruptedException ignore) {}
}
@Override
public void start(CoprocessorEnvironment env) throws IOException {
super.start(env);
// start for the RegionServerObserver will be called only once in the lifetime of the
// server. We will construct and register all metrics that we will track across method
// invocations.
if (env instanceof RegionCoprocessorEnvironment) {
// Obtain the MetricRegistry for the RegionServer. Metrics from this registry will be reported
// at the region server level per-regionserver.
MetricRegistry registry =
((RegionCoprocessorEnvironment) env).getMetricRegistryForRegionServer();
if (preGetCounter == null) {
// Create a new Counter, or get the already registered counter.
// It is much better to only call this once and save the Counter as a class field instead
// of creating the counter every time a coprocessor method is invoked. This will negate
// any performance bottleneck coming from map lookups tracking metrics in the registry.
// Returned counter instance is shared by all coprocessors of the same class in the same
// region server.
preGetCounter = registry.counter("preGetRequests");
}
if (costlyOperationTimer == null) {
// Create a Timer to track execution times for the costly operation.
costlyOperationTimer = registry.timer("costlyOperation");
}
}
}
@Override
public void stop(CoprocessorEnvironment e) throws IOException {
// we should NOT remove / deregister the metrics in stop(). The whole registry will be
// removed when the last region of the table is closed.
super.stop(e);
}
}

4
hbase-hadoop-compat/pom.xml
View File

@ -122,6 +122,10 @@
<groupId>org.apache.commons</groupId>
<artifactId>commons-math</artifactId>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-metrics-api</artifactId>
</dependency>
</dependencies>
<profiles>

2
hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/metrics/BaseSource.java
View File

@ -104,4 +104,6 @@ public interface BaseSource {
*/
String getMetricsName();
MetricRegistryInfo getMetricRegistryInfo();
}

4
hbase-hadoop2-compat/pom.xml
View File

@ -164,6 +164,10 @@ limitations under the License.
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-common</artifactId>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-metrics</artifactId>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-hadoop-compat</artifactId>

52
hbase-hadoop2-compat/src/main/java/org/apache/hadoop/hbase/metrics/BaseSourceImpl.java
View File

@ -19,6 +19,9 @@
package org.apache.hadoop.hbase.metrics;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.metrics.impl.GlobalMetricRegistriesAdapter;
import org.apache.hadoop.hbase.metrics.impl.HBaseMetrics2HadoopMetricsAdapter;
import org.apache.hadoop.hbase.regionserver.MetricsRegionServerSourceImpl;
import org.apache.hadoop.metrics2.MetricsCollector;
import org.apache.hadoop.metrics2.MetricsSource;
import org.apache.hadoop.metrics2.impl.JmxCacheBuster;
@ -47,15 +50,53 @@ public class BaseSourceImpl implements BaseSource, MetricsSource {
inited = true;
DefaultMetricsSystem.initialize(HBASE_METRICS_SYSTEM_NAME);
JvmMetrics.initSingleton(name, "");
// initialize hbase-metrics module based metric system as well. GlobalMetricRegistriesSource
// initialization depends on the metric system being already initialized, that is why we are
// doing it here. Once BaseSourceSourceImpl is removed, we should do the initialization of
// these elsewhere.
GlobalMetricRegistriesAdapter.init();
}
}
/**
* @deprecated Use hbase-metrics/hbase-metrics-api module interfaces for new metrics.
* Defining BaseSources for new metric groups (WAL, RPC, etc) is not needed anymore, however,
* for existing BaseSource implemetnations, please use the field named "registry" which is a
* MetricRegistry instance together with the HBaseMetrics2HadoopMetricsAdapter.
*/
@Deprecated
protected final DynamicMetricsRegistry metricsRegistry;
protected final String metricsName;
protected final String metricsDescription;
protected final String metricsContext;
protected final String metricsJmxContext;
/**
* Note that there are at least 4 MetricRegistry definitions in the source code. The first one is
* Hadoop Metrics2 MetricRegistry, second one is DynamicMetricsRegistry which is HBase's fork
* of the Hadoop metrics2 class. The third one is the dropwizard metrics implementation of
* MetricRegistry, and finally a new API abstraction in HBase that is the
* o.a.h.h.metrics.MetricRegistry class. This last one is the new way to use metrics within the
* HBase code. However, the others are in play because of existing metrics2 based code still
* needs to coexists until we get rid of all of our BaseSource and convert them to the new
* framework. Until that happens, new metrics can use the new API, but will be collected
* through the HBaseMetrics2HadoopMetricsAdapter class.
*
* BaseSourceImpl has two MetricRegistries. metricRegistry is for hadoop Metrics2 based
* metrics, while the registry is for hbase-metrics based metrics.
*/
protected final MetricRegistry registry;
/**
* The adapter from hbase-metrics module to metrics2. This adepter is the connection between the
* Metrics in the MetricRegistry and the Hadoop Metrics2 system. Using this adapter, existing
* BaseSource implementations can define new metrics using the hbase-metrics/hbase-metrics-api
* module interfaces and still be able to make use of metrics2 sinks (including JMX). Existing
* BaseSources should call metricsAdapter.snapshotAllMetrics() in getMetrics() method. See
* {@link MetricsRegionServerSourceImpl}.
*/
protected final HBaseMetrics2HadoopMetricsAdapter metricsAdapter;
public BaseSourceImpl(
String metricsName,
String metricsDescription,
@ -72,6 +113,11 @@ public class BaseSourceImpl implements BaseSource, MetricsSource {
//Register this instance.
DefaultMetricsSystem.instance().register(metricsJmxContext, metricsDescription, this);
// hbase-metrics module based metrics are registered in the hbase MetricsRegistry.
registry = MetricRegistries.global().create(this.getMetricRegistryInfo());
metricsAdapter = new HBaseMetrics2HadoopMetricsAdapter();
init();
}
@ -166,4 +212,10 @@ public class BaseSourceImpl implements BaseSource, MetricsSource {
return metricsName;
}
@Override
public MetricRegistryInfo getMetricRegistryInfo() {
return new MetricRegistryInfo(getMetricsName(), getMetricsDescription(),
getMetricsContext(), getMetricsJmxContext(), true);
}
}

233
hbase-hadoop2-compat/src/main/java/org/apache/hadoop/hbase/metrics/impl/GlobalMetricRegistriesAdapter.java Normal file
View File

@ -0,0 +1,233 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.commons.lang.reflect.FieldUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.metrics.MetricRegistries;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
import org.apache.hadoop.metrics2.MetricsCollector;
import org.apache.hadoop.metrics2.MetricsExecutor;
import org.apache.hadoop.metrics2.MetricsSource;
import org.apache.hadoop.metrics2.MetricsSystem;
import org.apache.hadoop.metrics2.impl.JmxCacheBuster;
import org.apache.hadoop.metrics2.impl.MetricsSystemImpl;
import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
import org.apache.hadoop.metrics2.lib.DefaultMetricsSystemHelper;
import org.apache.hadoop.metrics2.lib.MetricsExecutorImpl;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Optional;
/**
* This class acts as an adapter to export the MetricRegistry's in the global registry. Each
* MetricRegistry will be registered or unregistered from the metric2 system. The collection will
* be performed via the MetricsSourceAdapter and the MetricRegistry will collected like a
* BaseSource instance for a group of metrics (like WAL, RPC, etc) with the MetricRegistryInfo's
* JMX context.
*
* <p>Developer note:
* Unlike the current metrics2 based approach, the new metrics approach
* (hbase-metrics-api and hbase-metrics modules) work by having different MetricRegistries that are
* initialized and used from the code that lives in their respective modules (hbase-server, etc).
* There is no need to define BaseSource classes and do a lot of indirection. The MetricRegistry'es
* will be in the global MetricRegistriesImpl, and this class will iterate over
* MetricRegistries.global() and register adapters to the metrics2 subsystem. These adapters then
* report the actual values by delegating to
* {@link HBaseMetrics2HadoopMetricsAdapter#snapshotAllMetrics(MetricRegistry, MetricsCollector)}.
*
* We do not initialize the Hadoop Metrics2 system assuming that other BaseSources already do so
* (see BaseSourceImpl). Once the last BaseSource is moved to the new system, the metric2
* initialization should be moved here.
* </p>
*/
public class GlobalMetricRegistriesAdapter {
private static final Log LOG = LogFactory.getLog(GlobalMetricRegistriesAdapter.class);
private class MetricsSourceAdapter implements MetricsSource {
private final MetricRegistry registry;
MetricsSourceAdapter(MetricRegistry registry) {
this.registry = registry;
}
@Override
public void getMetrics(MetricsCollector collector, boolean all) {
metricsAdapter.snapshotAllMetrics(registry, collector);
}
}
private final MetricsExecutor executor;
private final AtomicBoolean stopped;
private final DefaultMetricsSystemHelper helper;
private final HBaseMetrics2HadoopMetricsAdapter metricsAdapter;
private final HashMap<MetricRegistryInfo, MetricsSourceAdapter> registeredSources;
private GlobalMetricRegistriesAdapter() {
this.executor = new MetricsExecutorImpl();
this.stopped = new AtomicBoolean(false);
this.metricsAdapter = new HBaseMetrics2HadoopMetricsAdapter();
this.registeredSources = new HashMap<>();
this.helper = new DefaultMetricsSystemHelper();
executor.getExecutor().scheduleAtFixedRate(new Runnable(){
@Override
public void run() {
doRun();
}}, 10, 10, TimeUnit.SECONDS);
}
/**
* Make sure that this global MetricSource for hbase-metrics module based metrics are initialized.
* This should be called only once.
*/
public static GlobalMetricRegistriesAdapter init() {
return new GlobalMetricRegistriesAdapter();
}
@VisibleForTesting
public void stop() {
stopped.set(true);
}
private void doRun() {
if (stopped.get()) {
executor.stop();
return;
}
if (LOG.isTraceEnabled()) {
LOG.trace("doRun called: " + registeredSources);
}
Collection<MetricRegistry> registries = MetricRegistries.global().getMetricRegistries();
for (MetricRegistry registry : registries) {
MetricRegistryInfo info = registry.getMetricRegistryInfo();
if (info.isExistingSource()) {
// If there is an already existing BaseSource for this MetricRegistry, skip it here. These
// types of registries are there only due to existing BaseSource implementations in the
// source code (like MetricsRegionServer, etc). This is to make sure that we can transition
// iteratively to the new hbase-metrics system. These type of MetricRegistry metrics will be
// exported from the BaseSource.getMetrics() call directly because there is already a
// MetricRecordBuilder there (see MetricsRegionServerSourceImpl).
continue;
}
if (!registeredSources.containsKey(info)) {
if (LOG.isDebugEnabled()) {
LOG.debug("Registering adapter for the MetricRegistry: " + info.getMetricsJmxContext());
}
// register this as a MetricSource under different JMX Context'es.
MetricsSourceAdapter adapter = new MetricsSourceAdapter(registry);
LOG.info("Registering " + info.getMetricsJmxContext() + " " + info.getMetricsDescription());
DefaultMetricsSystem.instance().register(info.getMetricsJmxContext(),
info.getMetricsDescription(), adapter);
registeredSources.put(info, adapter);
// next collection will collect the newly registered MetricSource. Doing this here leads to
// ConcurrentModificationException.
}
}
boolean removed = false;
// Remove registered sources if it is removed from the global registry
for (Iterator<Entry<MetricRegistryInfo, MetricsSourceAdapter>> it =
registeredSources.entrySet().iterator(); it.hasNext();) {
Entry<MetricRegistryInfo, MetricsSourceAdapter> entry = it.next();
MetricRegistryInfo info = entry.getKey();
Optional<MetricRegistry> found = MetricRegistries.global().get(info);
if (!found.isPresent()) {
if (LOG.isDebugEnabled()) {
LOG.debug("Removing adapter for the MetricRegistry: " + info.getMetricsJmxContext());
}
synchronized(DefaultMetricsSystem.instance()) {
unregisterSource(info);
helper.removeSourceName(info.getMetricsJmxContext());
helper.removeObjectName(info.getMetricsJmxContext());
it.remove();
removed = true;
}
}
}
if (removed) {
JmxCacheBuster.clearJmxCache();
}
}
/**
* Use reflection to unregister the Hadoop metric source, since MetricsSystem#unregisterSource()
* is only available in Hadoop 2.6+ (HADOOP-10839)
*/
@VisibleForTesting
protected void unregisterSource(MetricRegistryInfo info) {
// unregisterSource is only available in Hadoop 2.6+ (HADOOP-10839). Don't unregister for now
MetricsSystem metricsSystem = DefaultMetricsSystem.instance();
if (metricsSystem instanceof MetricsSystemImpl) {
try {
// it's actually a Map<String, MetricsSourceAdapter> , but MetricsSourceAdapter isn't
// accessible
@SuppressWarnings("unchecked")
Map<String, Object> sources =
(Map<String, Object>) FieldUtils.readField(metricsSystem, "sources", true);
String sourceName = info.getMetricsJmxContext();
if (sources.containsKey(sourceName)) {
Object sourceAdapter = sources.get(sourceName);
Method method = null;
try {
method = sourceAdapter.getClass().getDeclaredMethod("stop");
} catch (NoSuchMethodException e) {
LOG.info("Stop method not found on MetricsSourceAdapter");
} catch (SecurityException e) {
LOG.info("Don't have access to call stop method not found on MetricsSourceAdapter", e);
}
if (method != null) {
method.setAccessible(true);
try {
method.invoke(sourceAdapter);
} catch (IllegalArgumentException | InvocationTargetException e) {
LOG.warn("Couldn't invoke stop on metrics source adapter: " + sourceName);
e.printStackTrace();
}
}
sources.remove(sourceName);
}
@SuppressWarnings("unchecked")
Map<String, MetricsSource> allSources =
(Map<String, MetricsSource>) FieldUtils.readField(metricsSystem, "allSources", true);
if (allSources.containsKey(sourceName)) {
allSources.remove(sourceName);
}
} catch (IllegalAccessException e) {
LOG.warn("Error unregistering metric source " + info.getMetricsJmxContext());
}
}
}
}

169
hbase-hadoop2-compat/src/main/java/org/apache/hadoop/hbase/metrics/impl/HBaseMetrics2HadoopMetricsAdapter.java Normal file
View File

@ -0,0 +1,169 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Copyright 2016 Josh Elser
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import java.util.Map;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.metrics.Counter;
import org.apache.hadoop.hbase.metrics.Gauge;
import org.apache.hadoop.hbase.metrics.Histogram;
import org.apache.hadoop.hbase.metrics.Meter;
import org.apache.hadoop.hbase.metrics.Metric;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
import org.apache.hadoop.hbase.metrics.Timer;
import org.apache.hadoop.metrics2.MetricsCollector;
import org.apache.hadoop.metrics2.MetricsInfo;
import org.apache.hadoop.metrics2.MetricsRecordBuilder;
import org.apache.hadoop.metrics2.lib.Interns;
import org.apache.hadoop.metrics2.lib.MutableHistogram;
/**
* This is the adapter from "HBase Metrics Framework", implemented in hbase-metrics-api and
* hbase-metrics modules to the Hadoop Metrics2 framework. This adapter is not a metric source,
* but a helper to be able to collect all of the Metric's in the MetricRegistry using the
* MetricsCollector and MetricsRecordBuilder.
*
* Some of the code is forked from https://github.com/joshelser/dropwizard-hadoop-metrics2.
*/
public class HBaseMetrics2HadoopMetricsAdapter {
private static final Log LOG
= LogFactory.getLog(HBaseMetrics2HadoopMetricsAdapter.class);
private static final String EMPTY_STRING = "";
public HBaseMetrics2HadoopMetricsAdapter() {
}
/**
* Iterates over the MetricRegistry and adds them to the {@code collector}.
*
* @param collector A metrics collector
*/
public void snapshotAllMetrics(MetricRegistry metricRegistry,
MetricsCollector collector) {
MetricRegistryInfo info = metricRegistry.getMetricRegistryInfo();
MetricsRecordBuilder builder = collector.addRecord(Interns.info(info.getMetricsName(),
info.getMetricsDescription()));
builder.setContext(info.getMetricsContext());
snapshotAllMetrics(metricRegistry, builder);
}
/**
* Iterates over the MetricRegistry and adds them to the {@code builder}.
*
* @param builder A record builder
*/
public void snapshotAllMetrics(MetricRegistry metricRegistry, MetricsRecordBuilder builder) {
Map<String, Metric> metrics = metricRegistry.getMetrics();
for (Map.Entry<String, Metric> e: metrics.entrySet()) {
// Always capitalize the name
String name = StringUtils.capitalize(e.getKey());
Metric metric = e.getValue();
if (metric instanceof Gauge) {
addGauge(name, (Gauge<?>) metric, builder);
} else if (metric instanceof Counter) {
addCounter(name, (Counter)metric, builder);
} else if (metric instanceof Histogram) {
addHistogram(name, (Histogram)metric, builder);
} else if (metric instanceof Meter) {
addMeter(name, (Meter)metric, builder);
} else if (metric instanceof Timer) {
addTimer(name, (Timer)metric, builder);
} else {
LOG.info("Ignoring unknown Metric class " + metric.getClass().getName());
}
}
}
private void addGauge(String name, Gauge<?> gauge, MetricsRecordBuilder builder) {
final MetricsInfo info = Interns.info(name, EMPTY_STRING);
final Object o = gauge.getValue();
// Figure out which gauge types metrics2 supports and call the right method
if (o instanceof Integer) {
builder.addGauge(info, (int) o);
} else if (o instanceof Long) {
builder.addGauge(info, (long) o);
} else if (o instanceof Float) {
builder.addGauge(info, (float) o);
} else if (o instanceof Double) {
builder.addGauge(info, (double) o);
} else {
LOG.warn("Ignoring Gauge (" + name + ") with unhandled type: " + o.getClass());
}
}
private void addCounter(String name, Counter counter, MetricsRecordBuilder builder) {
MetricsInfo info = Interns.info(name, EMPTY_STRING);
builder.addCounter(info, counter.getCount());
}
/**
* Add Histogram value-distribution data to a Hadoop-Metrics2 record building.
*
* @param builder A Hadoop-Metrics2 record builder.
* @param name A base name for this record.
* @param desc A description for this record.
* @param snapshot The distribution of measured values.
*/
private void addHistogram(String name, Histogram histogram, MetricsRecordBuilder builder) {
MutableHistogram.snapshot(name, EMPTY_STRING, histogram, builder, true);
}
/**
* Add Dropwizard-Metrics rate information to a Hadoop-Metrics2 record builder, converting the
* rates to the appropriate unit.
*
* @param builder A Hadoop-Metrics2 record builder.
* @param name A base name for this record.
*/
private void addMeter(String name, Meter meter, MetricsRecordBuilder builder) {
builder.addGauge(Interns.info(name + "_count", EMPTY_STRING), meter.getCount());
builder.addGauge(Interns.info(name + "_mean_rate", EMPTY_STRING), meter.getMeanRate());
builder.addGauge(Interns.info(name + "_1min_rate", EMPTY_STRING), meter.getOneMinuteRate());
builder.addGauge(Interns.info(name + "_5min_rate", EMPTY_STRING), meter.getFiveMinuteRate());
builder.addGauge(Interns.info(name + "_15min_rate", EMPTY_STRING),
meter.getFifteenMinuteRate());
}
private void addTimer(String name, Timer timer, MetricsRecordBuilder builder) {
addMeter(name, timer.getMeter(), builder);
addHistogram(name, timer.getHistogram(), builder);
}
}

6
hbase-hadoop2-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerSourceImpl.java
View File

@ -473,6 +473,12 @@ public class MetricsRegionServerSourceImpl
}
metricsRegistry.snapshot(mrb, all);
// source is registered in supers constructor, sometimes called before the whole initialization.
if (metricsAdapter != null) {
// snapshot MetricRegistry as well
metricsAdapter.snapshotAllMetrics(registry, mrb);
}
}
@Override

7
hbase-hadoop2-compat/src/main/java/org/apache/hadoop/hbase/replication/regionserver/MetricsReplicationGlobalSourceSource.java
View File

@ -18,6 +18,7 @@
package org.apache.hadoop.hbase.replication.regionserver;
import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
import org.apache.hadoop.metrics2.lib.MutableFastCounter;
import org.apache.hadoop.metrics2.lib.MutableGaugeLong;
import org.apache.hadoop.metrics2.lib.MutableHistogram;
@ -243,4 +244,10 @@ public class MetricsReplicationGlobalSourceSource implements MetricsReplicationS
public String getMetricsName() {
return rms.getMetricsName();
}
@Override
public MetricRegistryInfo getMetricRegistryInfo() {
return new MetricRegistryInfo(getMetricsName(), getMetricsDescription(),
getMetricsContext(), getMetricsJmxContext(), true);
}
}

7
hbase-hadoop2-compat/src/main/java/org/apache/hadoop/hbase/replication/regionserver/MetricsReplicationSourceSourceImpl.java
View File

@ -17,6 +17,7 @@
*/
package org.apache.hadoop.hbase.replication.regionserver;
import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
import org.apache.hadoop.metrics2.lib.MutableFastCounter;
import org.apache.hadoop.metrics2.lib.MutableGaugeLong;
import org.apache.hadoop.metrics2.lib.MutableHistogram;
@ -306,4 +307,10 @@ public class MetricsReplicationSourceSourceImpl implements MetricsReplicationSou
public String getMetricsName() {
return rms.getMetricsName();
}
@Override
public MetricRegistryInfo getMetricRegistryInfo() {
return new MetricRegistryInfo(getMetricsName(), getMetricsDescription(),
getMetricsContext(), getMetricsJmxContext(), true);
}
}

50
hbase-hadoop2-compat/src/main/java/org/apache/hadoop/metrics2/lib/DefaultMetricsSystemHelper.java
View File

@ -17,26 +17,44 @@
*/
package org.apache.hadoop.metrics2.lib;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.HashMap;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.lang.reflect.Method;
public class DefaultMetricsSystemHelper {
private static final Log LOG = LogFactory.getLog(DefaultMetricsSystemHelper.class);
private final Method removeObjectMethod;
private final Field sourceNamesField;
private final Field mapField;
public DefaultMetricsSystemHelper() {
Class<? extends DefaultMetricsSystem> clazz = DefaultMetricsSystem.INSTANCE.getClass();
Method m;
try {
Class<? extends DefaultMetricsSystem> clazz = DefaultMetricsSystem.INSTANCE.getClass();
m = clazz.getDeclaredMethod("removeObjectName", String.class);
m.setAccessible(true);
} catch (NoSuchMethodException e) {
m = null;
}
removeObjectMethod = m;
Field f1, f2;
try {
f1 = clazz.getDeclaredField("sourceNames");
f1.setAccessible(true);
f2 = UniqueNames.class.getDeclaredField("map");
f2.setAccessible(true);
} catch (NoSuchFieldException e) {
LOG.trace(e);
f1 = null;
f2 = null;
}
sourceNamesField = f1;
mapField = f2;
}
public boolean removeObjectName(final String name) {
@ -52,4 +70,30 @@ public class DefaultMetricsSystemHelper {
}
return false;
}
/**
* Unfortunately Hadoop tries to be too-clever and permanently keeps track of all names registered
* so far as a Source, thus preventing further re-registration of the source with the same name.
* In case of dynamic metrics tied to region-lifecycles, this becomes a problem because we would
* like to be able to re-register and remove with the same name. Otherwise, it is resource leak.
* This ugly code manually removes the name from the UniqueNames map.
* TODO: May not be needed for Hadoop versions after YARN-5190.
*/
public void removeSourceName(String name) {
if (sourceNamesField == null || mapField == null) {
return;
}
try {
Object sourceNames = sourceNamesField.get(DefaultMetricsSystem.INSTANCE);
HashMap map = (HashMap) mapField.get(sourceNames);
synchronized (sourceNames) {
map.remove(name);
}
} catch (Exception ex) {
if (LOG.isTraceEnabled()) {
LOG.trace("Received exception while trying to access Hadoop Metrics classes via reflection.",
ex);
}
}
}
}

109
hbase-hadoop2-compat/src/main/java/org/apache/hadoop/metrics2/lib/MutableHistogram.java
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@ -20,9 +20,10 @@ package org.apache.hadoop.metrics2.lib;
import org.apache.commons.lang.StringUtils;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.metrics.Histogram;
import org.apache.hadoop.hbase.metrics.Interns;
import org.apache.hadoop.hbase.util.Counter;
import org.apache.hadoop.hbase.util.FastLongHistogram;
import org.apache.hadoop.hbase.metrics.Snapshot;
import org.apache.hadoop.hbase.metrics.impl.HistogramImpl;
import org.apache.hadoop.metrics2.MetricHistogram;
import org.apache.hadoop.metrics2.MetricsInfo;
import org.apache.hadoop.metrics2.MetricsRecordBuilder;
@ -32,30 +33,10 @@ import org.apache.hadoop.metrics2.MetricsRecordBuilder;
*/
@InterfaceAudience.Private
public class MutableHistogram extends MutableMetric implements MetricHistogram {
// Double buffer the two FastLongHistograms.
// As they are reset they learn how the buckets should be spaced
// So keep two around and use them
protected final FastLongHistogram histogram;
protected HistogramImpl histogram;
protected final String name;
protected final String desc;
protected final Counter counter = new Counter(0);
private boolean metricsInfoStringInited = false;
private String NUM_OPS_METRIC;
private String MIN_METRIC;
private String MAX_METRIC;
private String MEAN_METRIC;
private String MEDIAN_METRIC;
private String TWENTY_FIFTH_PERCENTILE_METRIC;
private String SEVENTY_FIFTH_PERCENTILE_METRIC;
private String NINETIETH_PERCENTILE_METRIC;
private String NINETY_FIFTH_PERCENTILE_METRIC;
private String NINETY_EIGHTH_PERCENTILE_METRIC;
private String NINETY_NINETH_PERCENTILE_METRIC;
private String NINETY_NINE_POINT_NINETH_PERCENTILE_METRIC;
public MutableHistogram(MetricsInfo info) {
this(info.name(), info.description());
}
@ -67,13 +48,11 @@ public class MutableHistogram extends MutableMetric implements MetricHistogram {
protected MutableHistogram(String name, String description, long maxExpected) {
this.name = StringUtils.capitalize(name);
this.desc = StringUtils.uncapitalize(description);
this.histogram = new FastLongHistogram(FastLongHistogram.DEFAULT_NBINS, 1, maxExpected);
this.histogram = new HistogramImpl();
}
public void add(final long val) {
counter.increment();
histogram.add(val, 1);
histogram.update(val);
}
public long getMax() {
@ -82,56 +61,42 @@ public class MutableHistogram extends MutableMetric implements MetricHistogram {
@Override
public synchronized void snapshot(MetricsRecordBuilder metricsRecordBuilder, boolean all) {
snapshot(name, desc, histogram, metricsRecordBuilder, all);
}
public static void snapshot(String name, String desc, Histogram histogram,
MetricsRecordBuilder metricsRecordBuilder, boolean all) {
// Get a reference to the old histogram.
FastLongHistogram histo = histogram.reset();
if (histo != null) {
updateSnapshotMetrics(metricsRecordBuilder, histo);
Snapshot snapshot = histogram.snapshot();
if (snapshot != null) {
updateSnapshotMetrics(name, desc, histogram, snapshot, metricsRecordBuilder);
}
}
protected void updateSnapshotMetrics(MetricsRecordBuilder metricsRecordBuilder,
FastLongHistogram histo) {
if (!metricsInfoStringInited) {
NUM_OPS_METRIC = name + NUM_OPS_METRIC_NAME;
MIN_METRIC = name + MIN_METRIC_NAME;
MAX_METRIC = name + MAX_METRIC_NAME;
MEAN_METRIC = name + MEAN_METRIC_NAME;
MEDIAN_METRIC = name + MEDIAN_METRIC_NAME;
TWENTY_FIFTH_PERCENTILE_METRIC = name + TWENTY_FIFTH_PERCENTILE_METRIC_NAME;
SEVENTY_FIFTH_PERCENTILE_METRIC = name + SEVENTY_FIFTH_PERCENTILE_METRIC_NAME;
NINETIETH_PERCENTILE_METRIC = name + NINETIETH_PERCENTILE_METRIC_NAME;
NINETY_FIFTH_PERCENTILE_METRIC = name + NINETY_FIFTH_PERCENTILE_METRIC_NAME;
NINETY_EIGHTH_PERCENTILE_METRIC = name + NINETY_EIGHTH_PERCENTILE_METRIC_NAME;
NINETY_NINETH_PERCENTILE_METRIC = name + NINETY_NINETH_PERCENTILE_METRIC_NAME;
NINETY_NINE_POINT_NINETH_PERCENTILE_METRIC = name +
NINETY_NINE_POINT_NINETH_PERCENTILE_METRIC_NAME;
protected static void updateSnapshotMetrics(String name, String desc, Histogram histogram,
Snapshot snapshot, MetricsRecordBuilder metricsRecordBuilder) {
metricsRecordBuilder.addCounter(Interns.info(name + NUM_OPS_METRIC_NAME, desc),
histogram.getCount());
metricsRecordBuilder.addGauge(Interns.info(name + MIN_METRIC_NAME, desc), snapshot.getMin());
metricsRecordBuilder.addGauge(Interns.info(name + MAX_METRIC_NAME, desc), snapshot.getMax());
metricsRecordBuilder.addGauge(Interns.info(name + MEAN_METRIC_NAME, desc), snapshot.getMean());
metricsInfoStringInited = true;
}
metricsRecordBuilder.addCounter(Interns.info(NUM_OPS_METRIC, desc), counter.get());
metricsRecordBuilder.addGauge(Interns.info(MIN_METRIC, desc), histo.getMin());
metricsRecordBuilder.addGauge(Interns.info(MAX_METRIC, desc), histo.getMax());
metricsRecordBuilder.addGauge(Interns.info(MEAN_METRIC, desc), histo.getMean());
long[] percentiles = histo.getQuantiles();
metricsRecordBuilder.addGauge(Interns.info(TWENTY_FIFTH_PERCENTILE_METRIC, desc),
percentiles[0]);
metricsRecordBuilder.addGauge(Interns.info(MEDIAN_METRIC, desc),
percentiles[1]);
metricsRecordBuilder.addGauge(Interns.info(SEVENTY_FIFTH_PERCENTILE_METRIC, desc),
percentiles[2]);
metricsRecordBuilder.addGauge(Interns.info(NINETIETH_PERCENTILE_METRIC, desc),
percentiles[3]);
metricsRecordBuilder.addGauge(Interns.info(NINETY_FIFTH_PERCENTILE_METRIC, desc),
percentiles[4]);
metricsRecordBuilder.addGauge(Interns.info(NINETY_EIGHTH_PERCENTILE_METRIC, desc),
percentiles[5]);
metricsRecordBuilder.addGauge(Interns.info(NINETY_NINETH_PERCENTILE_METRIC, desc),
percentiles[6]);
metricsRecordBuilder.addGauge(Interns.info(name + TWENTY_FIFTH_PERCENTILE_METRIC_NAME, desc),
snapshot.get25thPercentile());
metricsRecordBuilder.addGauge(Interns.info(name + MEDIAN_METRIC_NAME, desc),
snapshot.getMedian());
metricsRecordBuilder.addGauge(Interns.info(name + SEVENTY_FIFTH_PERCENTILE_METRIC_NAME, desc),
snapshot.get75thPercentile());
metricsRecordBuilder.addGauge(Interns.info(name + NINETIETH_PERCENTILE_METRIC_NAME, desc),
snapshot.get90thPercentile());
metricsRecordBuilder.addGauge(Interns.info(name + NINETY_FIFTH_PERCENTILE_METRIC_NAME, desc),
snapshot.get95thPercentile());
metricsRecordBuilder.addGauge(Interns.info(name + NINETY_EIGHTH_PERCENTILE_METRIC_NAME, desc),
snapshot.get98thPercentile());
metricsRecordBuilder.addGauge(Interns.info(name + NINETY_NINETH_PERCENTILE_METRIC_NAME, desc),
snapshot.get99thPercentile());
metricsRecordBuilder.addGauge(
Interns.info(NINETY_NINE_POINT_NINETH_PERCENTILE_METRIC, desc),
percentiles[7]);
Interns.info(name + NINETY_NINE_POINT_NINETH_PERCENTILE_METRIC_NAME, desc),
snapshot.get999thPercentile());
}
}

14
hbase-hadoop2-compat/src/main/java/org/apache/hadoop/metrics2/lib/MutableRangeHistogram.java
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@ -20,7 +20,7 @@ package org.apache.hadoop.metrics2.lib;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.metrics.Interns;
import org.apache.hadoop.hbase.util.FastLongHistogram;
import org.apache.hadoop.hbase.metrics.Snapshot;
import org.apache.hadoop.metrics2.MetricHistogram;
import org.apache.hadoop.metrics2.MetricsInfo;
import org.apache.hadoop.metrics2.MetricsRecordBuilder;
@ -56,22 +56,22 @@ public abstract class MutableRangeHistogram extends MutableHistogram implements
@Override
public synchronized void snapshot(MetricsRecordBuilder metricsRecordBuilder, boolean all) {
// Get a reference to the old histogram.
FastLongHistogram histo = histogram.reset();
if (histo != null) {
updateSnapshotMetrics(metricsRecordBuilder, histo);
updateSnapshotRangeMetrics(metricsRecordBuilder, histo);
Snapshot snapshot = histogram.snapshot();
if (snapshot != null) {
updateSnapshotMetrics(name, desc, histogram, snapshot, metricsRecordBuilder);
updateSnapshotRangeMetrics(metricsRecordBuilder, snapshot);
}
}
public void updateSnapshotRangeMetrics(MetricsRecordBuilder metricsRecordBuilder,
FastLongHistogram histogram) {
Snapshot snapshot) {
long priorRange = 0;
long cumNum = 0;
final long[] ranges = getRanges();
final String rangeType = getRangeType();
for (int i = 0; i < ranges.length - 1; i++) {
long val = histogram.getNumAtOrBelow(ranges[i]);
long val = snapshot.getCountAtOrBelow(ranges[i]);
if (val - cumNum > 0) {
metricsRecordBuilder.addCounter(
Interns.info(name + "_" + rangeType + "_" + priorRange + "-" + ranges[i], desc),

86
hbase-hadoop2-compat/src/test/java/org/apache/hadoop/hbase/metrics/impl/TestGlobalMetricRegistriesAdapter.java Normal file
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@ -0,0 +1,86 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
import org.apache.hadoop.hbase.testclassification.MetricsTests;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.apache.hadoop.metrics2.MetricsSource;
import org.apache.hadoop.metrics2.MetricsSystem;
import org.apache.hadoop.metrics2.annotation.Metric;
import org.apache.hadoop.metrics2.annotation.Metrics;
import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
import org.apache.hadoop.metrics2.lib.MetricsRegistry;
import org.apache.hadoop.metrics2.lib.MutableCounterLong;
import org.apache.hadoop.metrics2.lib.MutableGaugeLong;
import org.apache.hadoop.metrics2.lib.MutableRate;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.mockito.Mockito;
@Category({ MetricsTests.class, SmallTests.class })
public class TestGlobalMetricRegistriesAdapter {
/**
* Tests that using reflection to unregister the Hadoop metrics source works properly
*/
@Test
public void testUnregisterSource() {
GlobalMetricRegistriesAdapter adapter = GlobalMetricRegistriesAdapter.init();
// we'll configure the sources manually, so disable the executor
adapter.stop();
TestSource ts1 = new TestSource("ts1");
TestSource ts2 = new TestSource("ts2");
MetricsSystem metricsSystem = DefaultMetricsSystem.instance();
metricsSystem.register("ts1", "", ts1);
metricsSystem.register("ts2", "", ts2);
MetricsSource s1 = metricsSystem.getSource("ts1");
assertNotNull(s1);
MetricRegistryInfo mockRegistryInfo = Mockito.mock(MetricRegistryInfo.class);
Mockito.when(mockRegistryInfo.getMetricsJmxContext()).thenReturn("ts1");
adapter.unregisterSource(mockRegistryInfo);
s1 = metricsSystem.getSource("ts1");
assertNull(s1);
MetricsSource s2 = metricsSystem.getSource("ts2");
assertNotNull(s2);
}
@Metrics(context = "test")
private static class TestSource {
@Metric("C1 desc")
MutableCounterLong c1;
@Metric("XXX desc")
MutableCounterLong xxx;
@Metric("G1 desc")
MutableGaugeLong g1;
@Metric("YYY desc")
MutableGaugeLong yyy;
@Metric
MutableRate s1;
@SuppressWarnings("unused")
final MetricsRegistry registry;
TestSource(String recName) {
registry = new MetricsRegistry(recName);
}
}
}

78
hbase-metrics-api/README.txt Normal file
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@ -0,0 +1,78 @@
Overview
========
hbase-metrics and hbase-metrics-api are two modules that define and implement the "new" metric
system used internally within HBase. These two modules (and some other code in hbase-hadoop2-compat)
module are referred as "HBase metrics framework".
HBase-metrics-api Module
========================
HBase Metrics API (hbase-metrics-api) contains the interface
that HBase exposes internally and to third party code (including coprocessors). It is a thin
abstraction over the actual implementation for backwards compatibility guarantees. The source
/ binary and other compatibility guarantees are for "LimitedPrivate API" (see [1] for an
explanation).
The metrics API in this hbase-metrics-api module is inspired by the Dropwizard metrics 3.1 API
(See [2]). It is a subset of the API only containing metrics collection. However, the implementation
is HBase-specific and provided in hbase-metrics module. All of the classes in this module is
HBase-internal. See the latest documentation of Dropwizard metrics for examples of defining / using
metrics.
HBase-metrics Module
====================
hbase-metrics module contains implementation of the "HBase Metrics API", including MetricRegistry,
Counter, Histogram, etc. These are highly concurrent implementations of the Metric interfaces.
Metrics in HBase are grouped into different sets (like WAL, RPC, RegionServer, etc). Each group of
metrics should be tracked via a MetricRegistry specific to that group. Metrics can be dynamically
added or removed from the registry with a name. Each Registry is independent of the other
registries and will have it's own JMX context and MetricRecord (when used with Metrics2).
MetricRegistry's themselves are tracked via a global registry (of MetricRegistries) called
MetricRegistries. MetricRegistries.global() can be used to obtain the global instance.
MetricRegistry instances can also be dynamically registered and removed. However, unlike the
MetricRegistry, MetricRegistries does reference counting of the MetricRegistry instances. Only
Metrics in the MetricRegistry instances that are in the global MetricRegistry are exported to the
metric sinks or JMX.
Coprocessor Metrics
===================
HBase allows custom coprocessors to track and export metrics using the new framework.
Coprocessors and other third party code should only use the classes and interfaces from
hbase-metrics-api module and only the classes that are marked with InterfaceAudience.LimitedPrivate
annotation. There is no guarantee on the compatibility requirements for other classes.
Coprocessors can obtain the MetricRegistry to register their custom metrics via corresponding
CoprocessorEnvironment context. See ExampleRegionObserverWithMetrics and
ExampleMasterObserverWithMetrics classes in hbase-examples module for usage.
Developer Notes
===============
Historically, HBase has been using Hadoop's Metrics2 framework [3] for collecting and reporting the
metrics internally. However, due to the difficultly of dealing with the Metrics2 framework, HBase is
moving away from Hadoop's metrics implementation to its custom implementation. The move will happen
incrementally, and during the time, both Hadoop Metrics2-based metrics and hbase-metrics module
based classes will be in the source code. All new implementations for metrics SHOULD use the new
API and framework.
Examples of the new framework can be found in MetricsCoprocessor and MetricsRegionServerSourceImpl
classes. See HBASE-9774 [4] for more context.
hbase-metrics module right now only deals with metrics tracking and collection. It does not do JMX
reporting or reporting to console, ganglia, opentsdb, etc. We use Hadoop's Metrics2 for reporting
metrics to different sinks or exporting via JMX. However, this is contained within the
hbase-hadoop2-compat module completely, so that rest of the code does not know anything about the
Metrics2 dependency. HBaseMetrics2HadoopMetricsAdapter is the adapter that can collect metrics
in a MetricRegistry using the metric2 MetricsCollector / MetricRecordBuilder interfaces.
GlobalMetricRegistriesSource is the global Metrics2 Source that collects all of the metrics in all
of the metric registries in the MetricRegistries.global() instance.
References
1. https://hbase.apache.org/book.html#hbase.versioning
2. http://metrics.dropwizard.io/
3. https://hadoop.apache.org/docs/r2.7.2/api/org/apache/hadoop/metrics2/package-summary.html
4. https://issues.apache.org/jira/browse/HBASE-9774

112
hbase-metrics-api/pom.xml Normal file
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@ -0,0 +1,112 @@
<?xml version="1.0"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<!--
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-->
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>hbase</artifactId>
<groupId>org.apache.hbase</groupId>
<version>1.4.0-SNAPSHOT</version>
<relativePath>..</relativePath>
</parent>
<artifactId>hbase-metrics-api</artifactId>
<name>Apache HBase - Metrics API</name>
<description>HBase Metrics API descriptions</description>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<configuration>
<skip>true</skip>
</configuration>
</plugin>
<!-- Make a jar and put the sources in the jar -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
</plugin>
<plugin>
<!--Make it so assembly:single does nothing in here-->
<artifactId>maven-assembly-plugin</artifactId>
<version>${maven.assembly.version}</version>
<configuration>
<skipAssembly>true</skipAssembly>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<!-- Always skip the second part executions, since we only run simple unit tests in this module -->
<executions>
<execution>
<id>secondPartTestsExecution</id>
<phase>test</phase>
<goals>
<goal>test</goal>
</goals>
<configuration>
<skip>true</skip>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<dependencies>
<!-- Intra-project dependencies -->
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-annotations</artifactId>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-annotations</artifactId>
<type>test-jar</type>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-common</artifactId>
</dependency>
<!-- General dependencies -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</dependency>
</dependencies>
<profiles>
<!-- Skip the tests in this module -->
<profile>
<id>skip-metrics-api-tests</id>
<activation>
<property>
<name>skip-metrics-api-tests</name>
</property>
</activation>
<properties>
<surefire.skipFirstPart>true</surefire.skipFirstPart>
</properties>
</profile>
</profiles>
</project>

60
hbase-metrics-api/src/main/java/org/apache/hadoop/hbase/metrics/Counter.java Normal file
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@ -0,0 +1,60 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
/**
* A mutable number optimized for high concurrency counting.
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
@InterfaceStability.Evolving
public interface Counter extends Metric {
/**
* Increment {@code this} by 1.
*/
void increment();
/**
* Increment {@code this} by {@code n}.
*
* @param n The amount to increment.
*/
void increment(long n);
/**
* Decrement {@code this} by 1.
*/
void decrement();
/**
* Decrement {@code this} by {@code n}.
*
* @param n The amount to decrement.
*/
void decrement(long n);
/**
* Returns the current value.
* @return the current value.
*/
long getCount();
}

35
hbase-metrics-api/src/main/java/org/apache/hadoop/hbase/metrics/Gauge.java Normal file
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@ -0,0 +1,35 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
/**
* A metrics which measures a discrete value.
*
* @param <T> The value of the Gauge.
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
@InterfaceStability.Evolving
public interface Gauge<T> extends Metric {
T getValue();
}

58
hbase-metrics-api/src/main/java/org/apache/hadoop/hbase/metrics/Histogram.java Normal file
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@ -0,0 +1,58 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
/**
* A metric which measures the distribution of values.
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
@InterfaceStability.Evolving
public interface Histogram extends Metric {
/**
* Adds a new value to the distribution.
*
* @param value The value to add
*/
void update(int value);
/**
* Adds a new value to the distribution.
*
* @param value The value to add
*/
void update(long value);
/**
* Return the total number of values added to the histogram.
* @return the total number of values.
*/
long getCount();
/**
* Snapshot the current values in the Histogram
* @return a Snapshot of the distribution.
*/
@InterfaceAudience.Private
Snapshot snapshot();
}

90
hbase-metrics-api/src/main/java/org/apache/hadoop/hbase/metrics/Meter.java Normal file
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@ -0,0 +1,90 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
/**
* A metric which measure the rate at which some operation is invoked.
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
@InterfaceStability.Evolving
public interface Meter extends Metric {
/**
* Records one occurrence.
*/
void mark();
/**
* Records {@code events} occurrences.
*
* @param events Number of occurrences to record.
*/
void mark(long events);
/**
* Returns the number of events.
* @return the number of events.
*/
long getCount();
/**
* Returns the mean rate at which events have occurred since the meter was created.
* @return the mean rate at which events have occurred since the meter was created
*/
double getMeanRate();
/**
* Returns the one-minute exponentially-weighted moving average rate at which events have
* occurred since the meter was created.
* <p/>
* This rate has the same exponential decay factor as the one-minute load average in the {@code
* top} Unix command.
*
* @return the one-minute exponentially-weighted moving average rate at which events have
* occurred since the meter was created
*/
double getOneMinuteRate();
/**
* Returns the five-minute exponentially-weighted moving average rate at which events have
* occurred since the meter was created.
* <p/>
* This rate has the same exponential decay factor as the five-minute load average in the {@code
* top} Unix command.
*
* @return the five-minute exponentially-weighted moving average rate at which events have
* occurred since the meter was created
*/
double getFiveMinuteRate();
/**
* Returns the fifteen-minute exponentially-weighted moving average rate at which events have
* occurred since the meter was created.
* <p/>
* This rate has the same exponential decay factor as the fifteen-minute load average in the
* {@code top} Unix command.
*
* @return the fifteen-minute exponentially-weighted moving average rate at which events have
* occurred since the meter was created
*/
double getFifteenMinuteRate();
}

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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
/**
* Parent interface for all metrics.
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
@InterfaceStability.Evolving
public interface Metric {
}

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/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import java.util.Collection;
import java.util.Set;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import com.google.common.base.Optional;
/**
* MetricRegistries is collection of MetricRegistry's. MetricsRegistries implementations should do
* ref-counting of MetricRegistry's via create() and remove() methods.
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
@InterfaceStability.Evolving
public abstract class MetricRegistries {
private static final class LazyHolder {
private static final MetricRegistries GLOBAL = MetricRegistriesLoader.load();
}
/**
* Return the global singleton instance for the MetricRegistries.
* @return MetricRegistries implementation.
*/
public static MetricRegistries global() {
return LazyHolder.GLOBAL;
}
/**
* Removes all the MetricRegisties.
*/
public abstract void clear();
/**
* Create or return MetricRegistry with the given info. MetricRegistry will only be created
* if current reference count is 0. Otherwise ref counted is incremented, and an existing instance
* will be returned.
* @param info the info object for the MetricRegistrytry.
* @return created or existing MetricRegistry.
*/
public abstract MetricRegistry create(MetricRegistryInfo info);
/**
* Decrements the ref count of the MetricRegistry, and removes if ref count == 0.
* @param key the info object for the MetricRegistrytry.
* @return true if metric registry is removed.
*/
public abstract boolean remove(MetricRegistryInfo key);
/**
* Returns the MetricRegistry if found.
* @param info the info for the registry.
* @return a MetricRegistry optional.
*/
public abstract Optional<MetricRegistry> get(MetricRegistryInfo info);
/**
* Returns MetricRegistryInfo's for the MetricRegistry's created.
* @return MetricRegistryInfo's for the MetricRegistry's created.
*/
public abstract Set<MetricRegistryInfo> getMetricRegistryInfos();
/**
* Returns MetricRegistry's created.
* @return MetricRegistry's created.
*/
public abstract Collection<MetricRegistry> getMetricRegistries();
}

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/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import java.util.ArrayList;
import java.util.List;
import java.util.ServiceLoader;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.util.ReflectionUtils;
import com.google.common.annotations.VisibleForTesting;
@InterfaceAudience.Private
public class MetricRegistriesLoader {
private static final Log LOG = LogFactory.getLog(MetricRegistries.class);
private static final String defaultClass
= "org.apache.hadoop.hbase.metrics.impl.MetricRegistriesImpl";
/**
* Creates a {@link MetricRegistries} instance using the corresponding {@link MetricRegistries}
* available to {@link ServiceLoader} on the classpath. If no instance is found, then default
* implementation will be loaded.
* @return A {@link MetricRegistries} implementation.
*/
public static MetricRegistries load() {
List<MetricRegistries> availableImplementations = getDefinedImplemantations();
return load(availableImplementations);
}
/**
* Creates a {@link MetricRegistries} instance using the corresponding {@link MetricRegistries}
* available to {@link ServiceLoader} on the classpath. If no instance is found, then default
* implementation will be loaded.
* @return A {@link MetricRegistries} implementation.
*/
@VisibleForTesting
static MetricRegistries load(List<MetricRegistries> availableImplementations) {
if (availableImplementations.size() == 1) {
// One and only one instance -- what we want/expect
MetricRegistries impl = availableImplementations.get(0);
LOG.info("Loaded MetricRegistries " + impl.getClass());
return impl;
} else if (availableImplementations.isEmpty()) {
try {
return ReflectionUtils.newInstance((Class<MetricRegistries>)Class.forName(defaultClass));
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
} else {
// Tell the user they're doing something wrong, and choose the first impl.
StringBuilder sb = new StringBuilder();
for (MetricRegistries factory : availableImplementations) {
if (sb.length() > 0) {
sb.append(", ");
}
sb.append(factory.getClass());
}
LOG.warn("Found multiple MetricRegistries implementations: " + sb
+ ". Using first found implementation: " + availableImplementations.get(0));
return availableImplementations.get(0);
}
}
private static List<MetricRegistries> getDefinedImplemantations() {
ServiceLoader<MetricRegistries> loader = ServiceLoader.load(MetricRegistries.class);
List<MetricRegistries> availableFactories = new ArrayList<>();
for (MetricRegistries impl : loader) {
availableFactories.add(impl);
}
return availableFactories;
}
}

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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import com.google.common.base.Optional;
/**
* General purpose factory for creating various metrics.
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
@InterfaceStability.Evolving
public interface MetricRegistry extends MetricSet {
/**
* Get or construct a {@link Timer} used to measure durations and report rates.
*
* @param name the name of the timer.
* @return An instance of {@link Timer}.
*/
Timer timer(String name);
/**
* Get or construct a {@link Histogram} used to measure a distribution of values.
*
* @param name The name of the Histogram.
* @return An instance of {@link Histogram}.
*/
Histogram histogram(String name);
/**
* Get or construct a {@link Meter} used to measure durations and report distributions (a
* combination of a {@link Timer} and a {@link Histogram}.
*
* @param name The name of the Meter.
* @return An instance of {@link Meter}.
*/
Meter meter(String name);
/**
* Get or construct a {@link Counter} used to track a mutable number.
*
* @param name The name of the Counter
* @return An instance of {@link Counter}.
*/
Counter counter(String name);
/**
* Register a {@link Gauge}. The Gauge will be invoked at a period defined by the implementation
* of {@link MetricRegistry}.
* @param name The name of the Gauge.
* @param gauge A callback to compute the current value.
* @return the registered gauge, or the existing gauge
*/
<T> Gauge<T> register(String name, Gauge<T> gauge);
/**
* Registers the {@link Metric} with the given name if there does not exist one with the same
* name. Returns the newly registered or existing Metric.
* @param name The name of the Metric.
* @param metric the metric to register
* @return the registered metric, or the existing metrid
*/
Metric register(String name, Metric metric);
/**
* Registers the {@link Metric}s in the given MetricSet.
* @param metricSet set of metrics to register.
*/
void registerAll(MetricSet metricSet);
/**
* Returns previously registered metric with the name if any.
* @param name the name of the metric
* @return previously registered metric
*/
Optional<Metric> get(String name);
/**
* Removes the metric with the given name.
*
* @param name the name of the metric
* @return true if the metric is removed.
*/
boolean remove(String name);
/**
* Return the MetricRegistryInfo object for this registry.
* @return MetricRegistryInfo describing the registry.
*/
@InterfaceAudience.Private
MetricRegistryInfo getMetricRegistryInfo();
}

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/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
/**
* A Factory for creating MetricRegistries. This is the main plugin point for metrics implementation
*/
@InterfaceAudience.Private
public interface MetricRegistryFactory {
/**
* Create a MetricRegistry from the given MetricRegistryInfo
* @param info the descriptor for MetricRegistry
* @return a MetricRegistry implementation
*/
MetricRegistry create(MetricRegistryInfo info);
}

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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
/**
* HBase Metrics are grouped in different MetricRegistry'ies. All metrics that correspond to a
* subcomponent (like RPC, GC, WAL) are managed in a single MetricRegistry.
* This class holds the name and description and JMX related context names for such group of
* metrics.
*/
@InterfaceAudience.Private
public class MetricRegistryInfo {
protected final String metricsName;
protected final String metricsDescription;
protected final String metricsContext;
protected final String metricsJmxContext;
protected final boolean existingSource;
public MetricRegistryInfo(
String metricsName,
String metricsDescription,
String metricsJmxContext,
String metricsContext,
boolean existingSource) {
this.metricsName = metricsName;
this.metricsDescription = metricsDescription;
this.metricsContext = metricsContext;
this.metricsJmxContext = metricsJmxContext;
this.existingSource = existingSource;
}
/**
* Get the metrics context. For hadoop metrics2 system this is usually an all lowercased string.
* eg. regionserver, master, thriftserver
*
* @return The string context used to register this source to hadoop's metrics2 system.
*/
public String getMetricsContext() {
return metricsContext;
}
/**
* Get the description of what this source exposes.
*/
public String getMetricsDescription() {
return metricsDescription;
}
/**
* Get the name of the context in JMX that this source will be exposed through.
* This is in ObjectName format. With the default context being Hadoop -&gt; HBase
*/
public String getMetricsJmxContext() {
return metricsJmxContext;
}
/**
* Get the name of the metrics that are being exported by this source.
* Eg. IPC, GC, WAL
*/
public String getMetricsName() {
return metricsName;
}
/**
* Returns whether or not this MetricRegistry is for an existing BaseSource
* @return true if this MetricRegistry is for an existing BaseSource.
*/
public boolean isExistingSource() {
return existingSource;
}
@Override
public boolean equals(Object obj) {
if (obj instanceof MetricRegistryInfo) {
return this.hashCode() == obj.hashCode();
} else {
return false;
}
}
@Override
public int hashCode() {
return new HashCodeBuilder()
.append(metricsName)
.append(metricsDescription)
.append(metricsContext)
.append(metricsJmxContext)
.hashCode();
}
}

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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import java.util.Map;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
/**
* A set of named metrics.
*
* @see MetricRegistry#registerAll(MetricSet)
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
@InterfaceStability.Evolving
public interface MetricSet extends Metric {
/**
* A map of metric names to metrics.
*
* @return the metrics
*/
Map<String, Metric> getMetrics();
}

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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
/**
* This is a dummy annotation that forces javac to produce output for
* otherwise empty package-info.java.
*
* <p>The result is maven-compiler-plugin can properly identify the scope of
* changed files
*
* <p>See more details in
* <a href="https://jira.codehaus.org/browse/MCOMPILER-205">
* maven-compiler-plugin: incremental compilation broken</a>
*/
@InterfaceAudience.Private
@Retention(RetentionPolicy.SOURCE)
public @interface PackageMarker {
}

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/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
/**
* A statictical sample of histogram values.
*/
@InterfaceAudience.Private
public interface Snapshot {
/**
* Return the values with the given quantiles.
* @param quantiles the requested quantiles.
* @return the value for the quantiles.
*/
long[] getQuantiles(double[] quantiles);
/**
* Return the values with the default quantiles.
* @return the value for default the quantiles.
*/
long[] getQuantiles();
/**
* Returns the number of values in the snapshot.
*
* @return the number of values
*/
long getCount();
/**
* Returns the total count below the given value
* @param val the value
* @return the total count below the given value
*/
long getCountAtOrBelow(long val);
/**
* Returns the value at the 25th percentile in the distribution.
*
* @return the value at the 25th percentile
*/
long get25thPercentile();
/**
* Returns the value at the 75th percentile in the distribution.
*
* @return the value at the 75th percentile
*/
long get75thPercentile();
/**
* Returns the value at the 90th percentile in the distribution.
*
* @return the value at the 90th percentile
*/
long get90thPercentile();
/**
* Returns the value at the 95th percentile in the distribution.
*
* @return the value at the 95th percentile
*/
long get95thPercentile();
/**
* Returns the value at the 98th percentile in the distribution.
*
* @return the value at the 98th percentile
*/
long get98thPercentile();
/**
* Returns the value at the 99th percentile in the distribution.
*
* @return the value at the 99th percentile
*/
long get99thPercentile();
/**
* Returns the value at the 99.9th percentile in the distribution.
*
* @return the value at the 99.9th percentile
*/
long get999thPercentile();
/**
* Returns the median value in the distribution.
*
* @return the median value
*/
long getMedian();
/**
* Returns the highest value in the snapshot.
*
* @return the highest value
*/
long getMax();
/**
* Returns the arithmetic mean of the values in the snapshot.
*
* @return the arithmetic mean
*/
long getMean();
/**
* Returns the lowest value in the snapshot.
*
* @return the lowest value
*/
long getMin();
// TODO: Dropwizard histograms also track stddev
}

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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import java.util.concurrent.TimeUnit;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
/**
* A metric which encompasses a {@link Histogram} and {@link Meter}.
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
@InterfaceStability.Evolving
public interface Timer extends Metric {
/**
* Update the timer with the given duration in given time unit.
* @param duration the duration of the event
* @param unit the time unit for the duration
*/
void update(long duration, TimeUnit unit);
/**
* Update the timer with the given duration in milliseconds
* @param durationMillis the duration of the event in ms
*/
void updateMillis(long durationMillis);
/**
* Update the timer with the given duration in microseconds
* @param durationMicros the duration of the event in microseconds
*/
void updateMicros(long durationMicros);
/**
* Update the timer with the given duration in nanoseconds
* @param durationNanos the duration of the event in ns
*/
void updateNanos(long durationNanos);
@InterfaceAudience.Private
Histogram getHistogram();
@InterfaceAudience.Private
Meter getMeter();
}

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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Metrics API for HBase.
*/
@PackageMarker
package org.apache.hadoop.hbase.metrics;
// End package-info.java

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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import static org.mockito.Mockito.mock;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import com.google.common.collect.Lists;
/**
* Test class for {@link MetricRegistriesLoader}.
*/
@Category(SmallTests.class)
public class TestMetricRegistriesLoader {
@Test
public void testLoadSinleInstance() {
MetricRegistries loader = mock(MetricRegistries.class);
MetricRegistries instance = MetricRegistriesLoader.load(Lists.newArrayList(loader));
assertEquals(loader, instance);
}
@Test
public void testLoadMultipleInstances() {
MetricRegistries loader1 = mock(MetricRegistries.class);
MetricRegistries loader2 = mock(MetricRegistries.class);
MetricRegistries loader3 = mock(MetricRegistries.class);
MetricRegistries instance = MetricRegistriesLoader.load(Lists.newArrayList(loader1, loader2,
loader3));
// the load() returns the first instance
assertEquals(loader1, instance);
assertNotEquals(loader2, instance);
assertNotEquals(loader3, instance);
}
}

1
hbase-metrics/README.txt Normal file
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@ -0,0 +1 @@
See the documentation at hbase-metrics-api/README.

136
hbase-metrics/pom.xml Normal file
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@ -0,0 +1,136 @@
<?xml version="1.0"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<!--
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-->
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>hbase</artifactId>
<groupId>org.apache.hbase</groupId>
<version>1.4.0-SNAPSHOT</version>
<relativePath>..</relativePath>
</parent>
<artifactId>hbase-metrics</artifactId>
<name>Apache HBase - Metrics Implementation</name>
<description>HBase Metrics Implementation</description>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<configuration>
<skip>true</skip>
</configuration>
</plugin>
<!-- Make a jar and put the sources in the jar -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
</plugin>
<plugin>
<!--Make it so assembly:single does nothing in here-->
<artifactId>maven-assembly-plugin</artifactId>
<version>${maven.assembly.version}</version>
<configuration>
<skipAssembly>true</skipAssembly>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<!-- Always skip the second part executions, since we only run simple unit tests in this module -->
<executions>
<execution>
<id>secondPartTestsExecution</id>
<phase>test</phase>
<goals>
<goal>test</goal>
</goals>
<configuration>
<skip>true</skip>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<dependencies>
<!-- Intra-project dependencies -->
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-annotations</artifactId>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-annotations</artifactId>
<type>test-jar</type>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-common</artifactId>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-metrics-api</artifactId>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-metrics-api</artifactId>
<type>test-jar</type>
<scope>test</scope>
</dependency>
<!-- General dependencies -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</dependency>
<dependency>
<groupId>io.dropwizard.metrics</groupId>
<artifactId>metrics-core</artifactId>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<profiles>
<!-- Skip the tests in this module -->
<profile>
<id>skip-metrics-tests</id>
<activation>
<property>
<name>skip-metrics-tests</name>
</property>
</activation>
<properties>
<surefire.skipFirstPart>true</surefire.skipFirstPart>
</properties>
</profile>
</profiles>
</project>

60
hbase-metrics/src/main/java/org/apache/hadoop/hbase/metrics/impl/CounterImpl.java Normal file
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@ -0,0 +1,60 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.metrics.Counter;
import org.apache.hadoop.hbase.util.LongAdder;
/**
* Custom implementation of {@link org.apache.hadoop.hbase.metrics.Counter} using LongAdder.
*/
@InterfaceAudience.Private
public class CounterImpl implements Counter {
private final LongAdder counter;
public CounterImpl() {
this.counter = new LongAdder();
}
@Override
public void increment() {
this.counter.increment();
}
@Override
public void increment(long n) {
this.counter.add(n);
}
@Override
public void decrement() {
this.counter.decrement();
}
@Override
public void decrement(long n) {
this.counter.add(-n);
}
@Override
public long getCount() {
return this.counter.sum();
}
}

74
hbase-metrics/src/main/java/org/apache/hadoop/hbase/metrics/impl/DropwizardMeter.java Normal file
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@ -0,0 +1,74 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import java.util.Objects;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import com.codahale.metrics.Meter;
/**
* Dropwizard metrics implementation of {@link org.apache.hadoop.hbase.metrics.Meter}.
*/
@InterfaceAudience.Private
public class DropwizardMeter implements org.apache.hadoop.hbase.metrics.Meter {
private final Meter meter;
public DropwizardMeter() {
this.meter = new Meter();
}
public DropwizardMeter(Meter meter) {
this.meter = Objects.requireNonNull(meter);
}
@Override public void mark() {
this.meter.mark();
}
@Override public void mark(long count) {
this.meter.mark(count);
}
@Override
public long getCount() {
return meter.getCount();
}
@Override
public double getMeanRate() {
return meter.getMeanRate();
}
@Override
public double getOneMinuteRate() {
return meter.getOneMinuteRate();
}
@Override
public double getFiveMinuteRate() {
return meter.getFiveMinuteRate();
}
@Override
public double getFifteenMinuteRate() {
return meter.getFifteenMinuteRate();
}
}

134
hbase-common/src/main/java/org/apache/hadoop/hbase/util/FastLongHistogram.java → hbase-metrics/src/main/java/org/apache/hadoop/hbase/metrics/impl/FastLongHistogram.java
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@ -15,19 +15,22 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.util;
package org.apache.hadoop.hbase.metrics.impl;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.hbase.metrics.Snapshot;
import org.apache.hadoop.hbase.util.AtomicUtils;
import org.apache.hadoop.hbase.util.LongAdder;
/**
* FastLongHistogram is a thread-safe class that estimate distribution of data and computes the
* quantiles.
*/
@InterfaceAudience.Public
@InterfaceAudience.Private
@InterfaceStability.Evolving
public class FastLongHistogram {
@ -43,7 +46,7 @@ public class FastLongHistogram {
* Bins is a class containing a list of buckets(or bins) for estimation histogram of some data.
*/
private static class Bins {
private final Counter[] counts;
private final LongAdder[] counts;
// inclusive
private final long binsMin;
// exclusive
@ -52,8 +55,8 @@ public class FastLongHistogram {
private final AtomicLong min = new AtomicLong(Long.MAX_VALUE);
private final AtomicLong max = new AtomicLong(0L);
private final Counter count = new Counter(0);
private final Counter total = new Counter(0);
private final LongAdder count = new LongAdder();
private final LongAdder total = new LongAdder();
// set to true when any of data has been inserted to the Bins. It is set after the counts are
// updated.
@ -88,10 +91,10 @@ public class FastLongHistogram {
this.counts = createCounters(numOfBins + 3);
}
private Counter[] createCounters(int num) {
Counter[] counters = new Counter[num];
private LongAdder[] createCounters(int num) {
LongAdder[] counters = new LongAdder[num];
for (int i = 0; i < num; i++) {
counters[i] = new Counter();
counters[i] = new LongAdder();
}
return counters;
}
@ -150,7 +153,7 @@ public class FastLongHistogram {
long[] counts = new long[this.counts.length];
long total = 0L;
for (int i = 0; i < this.counts.length; i++) {
counts[i] = this.counts[i].get();
counts[i] = this.counts[i].sum();
total += counts[i];
}
@ -218,10 +221,24 @@ public class FastLongHistogram {
final int targetIndex = getIndex(val);
long totalToCurrentIndex = 0;
for (int i = 0; i <= targetIndex; i++) {
totalToCurrentIndex += this.counts[i].get();
totalToCurrentIndex += this.counts[i].sum();
}
return totalToCurrentIndex;
}
public long getMin() {
long min = this.min.get();
return min == Long.MAX_VALUE ? 0 : min; // in case it is not initialized
}
public long getMean() {
long count = this.count.sum();
long total = this.total.sum();
if (count == 0) {
return 0;
}
return total / count;
}
}
// The bins counting values. It is replaced with a new one in calling of reset().
@ -281,8 +298,7 @@ public class FastLongHistogram {
}
public long getMin() {
long min = this.bins.min.get();
return min == Long.MAX_VALUE ? 0 : min; // in case it is not initialized
return this.bins.getMin();
}
public long getMax() {
@ -290,17 +306,11 @@ public class FastLongHistogram {
}
public long getCount() {
return this.bins.count.get();
return this.bins.count.sum();
}
public long getMean() {
Bins bins = this.bins;
long count = bins.count.get();
long total = bins.total.get();
if (count == 0) {
return 0;
}
return total / count;
return this.bins.getMean();
}
public long getNumAtOrBelow(long value) {
@ -310,9 +320,87 @@ public class FastLongHistogram {
/**
* Resets the histogram for new counting.
*/
public FastLongHistogram reset() {
Bins oldBins = this.bins;
public Snapshot snapshotAndReset() {
final Bins oldBins = this.bins;
this.bins = new Bins(this.bins, this.bins.counts.length - 3, 0.01, 0.99);
return new FastLongHistogram(oldBins);
final long[] percentiles = oldBins.getQuantiles(DEFAULT_QUANTILES);
final long count = oldBins.count.sum();
return new Snapshot() {
@Override
public long[] getQuantiles(double[] quantiles) {
return oldBins.getQuantiles(quantiles);
}
@Override
public long[] getQuantiles() {
return percentiles;
}
@Override
public long getCount() {
return count;
}
@Override
public long getCountAtOrBelow(long val) {
return oldBins.getNumAtOrBelow(val);
}
@Override
public long get25thPercentile() {
return percentiles[0];
}
@Override
public long get75thPercentile() {
return percentiles[2];
}
@Override
public long get90thPercentile() {
return percentiles[3];
}
@Override
public long get95thPercentile() {
return percentiles[4];
}
@Override
public long get98thPercentile() {
return percentiles[5];
}
@Override
public long get99thPercentile() {
return percentiles[6];
}
@Override
public long get999thPercentile() {
return percentiles[7];
}
@Override
public long getMedian() {
return percentiles[1];
}
@Override
public long getMax() {
return oldBins.max.get();
}
@Override
public long getMean() {
return oldBins.getMean();
}
@Override
public long getMin() {
return oldBins.getMin();
}
};
}
}

81
hbase-metrics/src/main/java/org/apache/hadoop/hbase/metrics/impl/HistogramImpl.java Normal file
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@ -0,0 +1,81 @@
/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.metrics.Histogram;
import org.apache.hadoop.hbase.metrics.Snapshot;
/**
* Custom histogram implementation based on FastLongHistogram. Dropwizard-based histograms are
* slow compared to this implementation, so we are using our implementation here.
* See HBASE-15222.
*/
@InterfaceAudience.Private
public class HistogramImpl implements Histogram {
// Double buffer the two FastLongHistograms.
// As they are reset they learn how the buckets should be spaced
// So keep two around and use them
protected final FastLongHistogram histogram;
private final CounterImpl counter;
public HistogramImpl() {
this(Integer.MAX_VALUE << 2);
}
public HistogramImpl(long maxExpected) {
this(FastLongHistogram.DEFAULT_NBINS, 1, maxExpected);
}
public HistogramImpl(int numBins, long min, long maxExpected) {
this.counter = new CounterImpl();
this.histogram = new FastLongHistogram(numBins, min, maxExpected);
}
protected HistogramImpl(CounterImpl counter, FastLongHistogram histogram) {
this.counter = counter;
this.histogram = histogram;
}
@Override
public void update(int value) {
counter.increment();
histogram.add(value, 1);
}
@Override
public void update(long value) {
counter.increment();
histogram.add(value, 1);
}
public long getCount() {
return counter.getCount();
}
public long getMax() {
return this.histogram.getMax();
}
public Snapshot snapshot() {
return histogram.snapshotAndReset();
}
}

82
hbase-metrics/src/main/java/org/apache/hadoop/hbase/metrics/impl/MetricRegistriesImpl.java Normal file
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@ -0,0 +1,82 @@
/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import java.util.Collection;
import java.util.Collections;
import java.util.Set;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.metrics.MetricRegistries;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.metrics.MetricRegistryFactory;
import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
import com.google.common.base.Optional;
import com.google.common.base.Supplier;
/**
* Implementation of MetricRegistries that does ref-counting.
*/
@InterfaceAudience.Private
public class MetricRegistriesImpl extends MetricRegistries {
private final MetricRegistryFactory factory;
private final RefCountingMap<MetricRegistryInfo, MetricRegistry> registries;
public MetricRegistriesImpl() {
this(new MetricRegistryFactoryImpl());
}
public MetricRegistriesImpl(MetricRegistryFactory factory) {
this.factory = factory;
this.registries = new RefCountingMap<>();
}
@Override
public MetricRegistry create(final MetricRegistryInfo info) {
return registries.put(info, new Supplier<MetricRegistry>() {
@Override
public MetricRegistry get() {
return factory.create(info);
}
});
}
public boolean remove(MetricRegistryInfo key) {
return registries.remove(key) == null;
}
public Optional<MetricRegistry> get(MetricRegistryInfo info) {
return Optional.fromNullable(registries.get(info));
}
public Collection<MetricRegistry> getMetricRegistries() {
return Collections.unmodifiableCollection(registries.values());
}
public void clear() {
registries.clear();
}
public Set<MetricRegistryInfo> getMetricRegistryInfos() {
return Collections.unmodifiableSet(registries.keySet());
}
}

34
hbase-metrics/src/main/java/org/apache/hadoop/hbase/metrics/impl/MetricRegistryFactoryImpl.java Normal file
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@ -0,0 +1,34 @@
/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.metrics.MetricRegistryFactory;
import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
@InterfaceAudience.Private
public class MetricRegistryFactoryImpl implements MetricRegistryFactory {
@Override
public MetricRegistry create(MetricRegistryInfo info) {
return new MetricRegistryImpl(info);
}
}

183
hbase-metrics/src/main/java/org/apache/hadoop/hbase/metrics/impl/MetricRegistryImpl.java Normal file
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@ -0,0 +1,183 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.metrics.Counter;
import org.apache.hadoop.hbase.metrics.Gauge;
import org.apache.hadoop.hbase.metrics.Histogram;
import org.apache.hadoop.hbase.metrics.Meter;
import org.apache.hadoop.hbase.metrics.Metric;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
import org.apache.hadoop.hbase.metrics.MetricSet;
import org.apache.hadoop.hbase.metrics.Timer;
import org.apache.hadoop.hbase.util.CollectionUtils;
import com.google.common.base.Optional;
/**
* Custom implementation of {@link MetricRegistry}.
*/
@InterfaceAudience.Private
public class MetricRegistryImpl implements MetricRegistry {
private final MetricRegistryInfo info;
private final ConcurrentMap<String, Metric> metrics;
public MetricRegistryImpl(MetricRegistryInfo info) {
this.info = info;
this.metrics = new ConcurrentHashMap<>();
}
@Override
public Timer timer(String name) {
Timer metric = (Timer) metrics.get(name);
if (metric != null) {
return metric;
}
Timer newTimer = createTimer();
metric = (Timer) metrics.putIfAbsent(name, newTimer);
if (metric != null) {
return metric;
}
return newTimer;
}
protected Timer createTimer() {
return new TimerImpl();
}
@Override
public Histogram histogram(String name) {
Histogram metric = (Histogram) metrics.get(name);
if (metric != null) {
return metric;
}
Histogram newHistogram = createHistogram();
metric = (Histogram) metrics.putIfAbsent(name, newHistogram);
if (metric != null) {
return metric;
}
return newHistogram;
}
protected Histogram createHistogram() {
return new HistogramImpl();
}
@Override
public Meter meter(String name) {
Meter metric = (Meter) metrics.get(name);
if (metric != null) {
return metric;
}
Meter newmeter = createMeter();
metric = (Meter) metrics.putIfAbsent(name, newmeter);
if (metric != null) {
return metric;
}
return newmeter;
}
protected Meter createMeter() {
return new DropwizardMeter();
}
@Override
public Counter counter(String name) {
Counter metric = (Counter) metrics.get(name);
if (metric != null) {
return metric;
}
Counter newCounter = createCounter();
metric = (Counter) metrics.putIfAbsent(name, newCounter);
if (metric != null) {
return metric;
}
return newCounter;
}
protected Counter createCounter() {
return new CounterImpl();
}
@Override
public Optional<Metric> get(String name) {
return Optional.fromNullable(metrics.get(name));
}
@Override
public Metric register(String name, Metric metric) {
Metric m = metrics.get(name);
if (m != null) {
return m;
}
Metric oldMetric = metrics.putIfAbsent(name, metric);
if (oldMetric != null) {
return oldMetric;
}
return metric;
}
@Override
public <T> Gauge<T> register(String name, Gauge<T> gauge) {
return (Gauge) register(name, (Metric)gauge);
}
@Override
public void registerAll(MetricSet metricSet) {
Set<Entry<String,Metric>> entrySet = metricSet.getMetrics().entrySet();
for (Entry<String, Metric> entry : entrySet) {
register(entry.getKey(), entry.getValue());
}
}
@Override
public Map<String, Metric> getMetrics() {
return metrics;
}
@Override
public boolean remove(String name) {
return metrics.remove(name) != null;
}
@Override
public MetricRegistryInfo getMetricRegistryInfo() {
return info;
}
}

108
hbase-metrics/src/main/java/org/apache/hadoop/hbase/metrics/impl/RefCountingMap.java Normal file
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@ -0,0 +1,108 @@
/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import com.google.common.base.Supplier;
/**
* A map of K to V, but does ref counting for added and removed values. The values are
* not added directly, but instead requested from the given Supplier if ref count == 0. Each put()
* call will increment the ref count, and each remove() will decrement it. The values are removed
* from the map iff ref count == 0.
*/
@InterfaceAudience.Private
class RefCountingMap<K, V> {
private ConcurrentHashMap<K, Payload<V>> map = new ConcurrentHashMap<>();
private static class Payload<V> {
V v;
volatile int refCount;
Payload(V v) {
this.v = v;
this.refCount = 1; // create with ref count = 1
}
}
V put(K key, Supplier<V> supplier) {
synchronized (map) {
Payload<V> oldValue = map.get(key);
if (oldValue == null) {
oldValue = new Payload<V>(supplier.get());
map.put(key, oldValue);
return oldValue.v;
}
oldValue.refCount++;
return oldValue.v;
}
}
V get(K k) {
Payload<V> p = map.get(k);
return p == null ? null : p.v;
}
/**
* Decrements the ref count of k, and removes from map if ref count == 0.
* @param k the key to remove
* @return the value associated with the specified key or null if key is removed from map.
*/
V remove(K key) {
synchronized (map) {
Payload<V> oldValue = map.get(key);
if (oldValue != null) {
if (--oldValue.refCount == 0) {
map.remove(key);
return null;
}
return oldValue.v;
}
}
return null;
}
void clear() {
map.clear();
}
Set<K> keySet() {
return map.keySet();
}
Collection<V> values() {
ArrayList<V> values = new ArrayList<V>(map.size());
for (Payload<V> v : map.values()) {
values.add(v.v);
}
return values;
}
int size() {
return map.size();
}
}

74
hbase-metrics/src/main/java/org/apache/hadoop/hbase/metrics/impl/TimerImpl.java Normal file
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@ -0,0 +1,74 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import java.util.concurrent.TimeUnit;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.metrics.Timer;
/**
* Custom implementation of {@link Timer}.
*/
@InterfaceAudience.Private
public class TimerImpl implements Timer {
private final HistogramImpl histogram;
private final DropwizardMeter meter;
// track time events in micros
private static final TimeUnit DEFAULT_UNIT = TimeUnit.MICROSECONDS;
public TimerImpl() {
this.histogram = new HistogramImpl();
this.meter = new DropwizardMeter();
}
@Override
public void update(long duration, TimeUnit unit) {
if (duration >= 0) {
histogram.update(DEFAULT_UNIT.convert(duration, unit));
meter.mark();
}
}
@Override
public HistogramImpl getHistogram() {
return histogram;
}
@Override
public DropwizardMeter getMeter() {
return meter;
}
@Override
public void updateMillis(long durationMillis) {
update(durationMillis, TimeUnit.NANOSECONDS);
}
@Override
public void updateMicros(long durationMicros) {
update(durationMicros, TimeUnit.MICROSECONDS);
}
@Override
public void updateNanos(long durationNanos) {
update(durationNanos, TimeUnit.NANOSECONDS);
}
}

25
hbase-metrics/src/main/java/org/apache/hadoop/hbase/metrics/impl/package-info.java Normal file
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@ -0,0 +1,25 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Implementation of the HBase Metrics framework.
*/
@PackageMarker
package org.apache.hadoop.hbase.metrics.impl;
import org.apache.hadoop.hbase.metrics.PackageMarker;

18
hbase-metrics/src/main/resources/META-INF/services/org.apache.hadoop.hbase.metrics.MetricRegistries Normal file
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@ -0,0 +1,18 @@
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
org.apache.hadoop.hbase.metrics.impl.MetricRegistriesImpl

59
hbase-metrics/src/test/java/org/apache/hadoop/hbase/metrics/impl/TestCounterImpl.java Normal file
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@ -0,0 +1,59 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import static org.junit.Assert.assertEquals;
import org.apache.hadoop.hbase.metrics.Counter;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
/**
* Test class for {@link CounterImpl}.
*/
@Category(SmallTests.class)
public class TestCounterImpl {
private Counter counter;
@Before public void setup() {
this.counter = new CounterImpl();
}
@Test public void testCounting() {
counter.increment();
assertEquals(1L, counter.getCount());
counter.increment();
assertEquals(2L, counter.getCount());
counter.increment(2L);
assertEquals(4L, counter.getCount());
counter.increment(-1L);
assertEquals(3L, counter.getCount());
counter.decrement();
assertEquals(2L, counter.getCount());
counter.decrement();
assertEquals(1L, counter.getCount());
counter.decrement(4L);
assertEquals(-3L, counter.getCount());
counter.decrement(-3L);
assertEquals(0L, counter.getCount());
}
}

51
hbase-metrics/src/test/java/org/apache/hadoop/hbase/metrics/impl/TestDropwizardMeter.java Normal file
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@ -0,0 +1,51 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.mockito.Mockito;
import com.codahale.metrics.Meter;
/**
* Test class for {@link DropwizardMeter}.
*/
@Category(SmallTests.class)
public class TestDropwizardMeter {
private Meter meter;
@Before public void setup() {
this.meter = Mockito.mock(Meter.class);
}
@Test public void test() {
DropwizardMeter dwMeter = new DropwizardMeter(this.meter);
dwMeter.mark();
dwMeter.mark(10L);
dwMeter.mark();
dwMeter.mark();
Mockito.verify(meter, Mockito.times(3)).mark();
Mockito.verify(meter).mark(10L);
}
}

14
hbase-common/src/test/java/org/apache/hadoop/hbase/util/TestFastLongHistogram.java → hbase-metrics/src/test/java/org/apache/hadoop/hbase/metrics/impl/TestFastLongHistogram.java
View File

@ -15,7 +15,9 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.util;
package org.apache.hadoop.hbase.metrics.impl;
import static org.junit.Assert.assertEquals;
import java.util.Arrays;
import java.util.Random;
@ -26,8 +28,6 @@ import org.junit.Assert;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import static org.junit.Assert.assertEquals;
/**
* Testcases for FastLongHistogram.
*/
@ -51,7 +51,7 @@ public class TestFastLongHistogram {
Assert.assertTrue(j + "-th element org: " + VALUES[j] + ", act: " + vals[j],
Math.abs(vals[j] - VALUES[j]) <= 10);
}
hist.reset();
hist.snapshotAndReset();
}
}
@ -86,7 +86,7 @@ public class TestFastLongHistogram {
Assert.assertTrue("Out of possible value", vals[2] >= 900 && vals[2] <= 1100);
}
hist.reset();
hist.snapshotAndReset();
}
}
@ -104,7 +104,7 @@ public class TestFastLongHistogram {
h.add(Integer.MAX_VALUE, 1);
h.reset();
h.snapshotAndReset();
for (long v : VALUES) {
for (int i = 0; i < 100; i++) {
@ -126,7 +126,7 @@ public class TestFastLongHistogram {
hist.add(50, 100);
hist.reset();
hist.snapshotAndReset();
doTestUniform(hist);
}
}

61
hbase-metrics/src/test/java/org/apache/hadoop/hbase/metrics/impl/TestGauge.java Normal file
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@ -0,0 +1,61 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import static org.junit.Assert.assertEquals;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.hadoop.hbase.metrics.Gauge;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Test;
import org.junit.experimental.categories.Category;
/**
* Test class for {@link Gauge}.
*/
@Category(SmallTests.class)
public class TestGauge {
@Test
public void testGetValue() {
SimpleGauge gauge = new SimpleGauge();
assertEquals(0, (long)gauge.getValue());
gauge.setValue(1000L);
assertEquals(1000L, (long)gauge.getValue());
}
/**
* Gauge implementation with a setter.
*/
private static class SimpleGauge implements Gauge<Long> {
private final AtomicLong value = new AtomicLong(0L);
@Override public Long getValue() {
return this.value.get();
}
public void setValue(long value) {
this.value.set(value);
}
}
}

103
hbase-metrics/src/test/java/org/apache/hadoop/hbase/metrics/impl/TestHistogramImpl.java Normal file
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@ -0,0 +1,103 @@
/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import static org.junit.Assert.assertEquals;
import org.apache.hadoop.hbase.metrics.Snapshot;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Test;
import org.junit.experimental.categories.Category;
/**
* Test case for {@link HistogramImpl}
*/
@Category(SmallTests.class)
public class TestHistogramImpl {
@Test
public void testUpdate() {
HistogramImpl histogram = new HistogramImpl();
assertEquals(0, histogram.getCount());
histogram.update(0);
assertEquals(1, histogram.getCount());
histogram.update(10);
assertEquals(2, histogram.getCount());
histogram.update(20);
histogram.update(30);
assertEquals(4, histogram.getCount());
}
@Test
public void testSnapshot() {
HistogramImpl histogram = new HistogramImpl();
for (int i = 0; i < 100; i++) {
histogram.update(i);
}
Snapshot snapshot = histogram.snapshot();
assertEquals(100, snapshot.getCount());
assertEquals(50, snapshot.getMedian());
assertEquals(49, snapshot.getMean());
assertEquals(0, snapshot.getMin());
assertEquals(99, snapshot.getMax());
assertEquals(25, snapshot.get25thPercentile());
assertEquals(75, snapshot.get75thPercentile());
assertEquals(90, snapshot.get90thPercentile());
assertEquals(95, snapshot.get95thPercentile());
assertEquals(98, snapshot.get98thPercentile());
assertEquals(99, snapshot.get99thPercentile());
assertEquals(99, snapshot.get999thPercentile());
assertEquals(51, snapshot.getCountAtOrBelow(50));
// check that histogram is reset.
assertEquals(100, histogram.getCount()); // count does not reset
// put more data after reset
for (int i = 100; i < 200; i++) {
histogram.update(i);
}
assertEquals(200, histogram.getCount());
snapshot = histogram.snapshot();
assertEquals(100, snapshot.getCount()); // only 100 more events
assertEquals(150, snapshot.getMedian());
assertEquals(149, snapshot.getMean());
assertEquals(100, snapshot.getMin());
assertEquals(199, snapshot.getMax());
assertEquals(125, snapshot.get25thPercentile());
assertEquals(175, snapshot.get75thPercentile());
assertEquals(190, snapshot.get90thPercentile());
assertEquals(195, snapshot.get95thPercentile());
assertEquals(198, snapshot.get98thPercentile());
assertEquals(199, snapshot.get99thPercentile());
assertEquals(199, snapshot.get999thPercentile());
}
}

164
hbase-metrics/src/test/java/org/apache/hadoop/hbase/metrics/impl/TestMetricRegistryImpl.java Normal file
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@ -0,0 +1,164 @@
/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import java.util.Map;
import org.apache.hadoop.hbase.metrics.Counter;
import org.apache.hadoop.hbase.metrics.Gauge;
import org.apache.hadoop.hbase.metrics.Meter;
import org.apache.hadoop.hbase.metrics.Metric;
import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
import org.apache.hadoop.hbase.metrics.Timer;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import com.google.common.base.Optional;
@Category(SmallTests.class)
public class TestMetricRegistryImpl {
private MetricRegistryInfo info;
private MetricRegistryImpl registry;
@Before
public void setUp() {
info = new MetricRegistryInfo("foo", "bar", "baz", "foobar", false);
registry = new MetricRegistryImpl(info);
}
@Test
public void testCounter() {
Counter counter = registry.counter("mycounter");
assertNotNull(counter);
counter.increment(42L);
Optional<Metric> metric = registry.get("mycounter");
assertTrue(metric.isPresent());
assertEquals(42L, (long)((Counter)metric.get()).getCount());
}
@Test
public void testRegisterGauge() {
registry.register("mygauge", new Gauge<Long>() {
@Override
public Long getValue() {
return 42L;
}
});
Optional<Metric> metric = registry.get("mygauge");
assertTrue(metric.isPresent());
assertEquals(42L, (long)((Gauge<Long>)metric.get()).getValue());
}
@Test
public void testRegisterGaugeLambda() {
// register a Gauge using lambda expression
registry.register("gaugeLambda", new Gauge<Long>(){
@Override
public Long getValue() {
return 42L;
}
});
Optional<Metric> metric = registry.get("gaugeLambda");
assertTrue(metric.isPresent());
assertEquals(42L, (long)((Gauge<Long>)metric.get()).getValue());
}
@Test
public void testTimer() {
Timer timer = registry.timer("mytimer");
assertNotNull(timer);
timer.updateNanos(100);
}
@Test
public void testMeter() {
Meter meter = registry.meter("mymeter");
assertNotNull(meter);
meter.mark();
}
@Test
public void testRegister() {
CounterImpl counter = new CounterImpl();
registry.register("mycounter", counter);
counter.increment(42L);
Optional<Metric> metric = registry.get("mycounter");
assertTrue(metric.isPresent());
assertEquals(42L, (long)((Counter)metric.get()).getCount());
}
@Test
public void testDoubleRegister() {
Gauge g1 = registry.register("mygauge", new Gauge<Long>(){
@Override
public Long getValue() {
return 42L;
}});
Gauge g2 = registry.register("mygauge", new Gauge<Long>(){
@Override
public Long getValue() {
return 52L;
}});
// second gauge is ignored if it exists
assertEquals(g1, g2);
Optional<Metric> metric = registry.get("mygauge");
assertTrue(metric.isPresent());
assertEquals(42L, (long)((Gauge<Long>)metric.get()).getValue());
Counter c1 = registry.counter("mycounter");
Counter c2 = registry.counter("mycounter");
assertEquals(c1, c2);
}
@Test
public void testGetMetrics() {
CounterImpl counter = new CounterImpl();
registry.register("mycounter", counter);
Gauge gauge = registry.register("mygauge", new Gauge<Long>(){
@Override
public Long getValue() {
return 42L;
}});
Timer timer = registry.timer("mytimer");
Map<String, Metric> metrics = registry.getMetrics();
assertEquals(3, metrics.size());
assertEquals(counter, metrics.get("mycounter"));
assertEquals(gauge, metrics.get("mygauge"));
assertEquals(timer, metrics.get("mytimer"));
}
}

284
hbase-metrics/src/test/java/org/apache/hadoop/hbase/metrics/impl/TestRefCountingMap.java Normal file
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@ -0,0 +1,284 @@
/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.util.Collection;
import java.util.Set;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import com.google.common.base.Supplier;
import com.google.common.collect.Lists;
@Category(SmallTests.class)
public class TestRefCountingMap {
private RefCountingMap<String, String> map;
@Before
public void setUp() {
map = new RefCountingMap<>();
}
@Test
public void testPutGet() {
map.put("foo", new Supplier<String>() {
@Override
public String get() {
return "foovalue";
}
});
String v = map.get("foo");
assertNotNull(v);
assertEquals("foovalue", v);
}
@Test
public void testPutMulti() {
String v1 = map.put("foo", new Supplier<String>() {
@Override
public String get() {
return "foovalue";
}
});
String v2 = map.put("foo", new Supplier<String>() {
@Override
public String get() {
return "foovalue2";
}
});
String v3 = map.put("foo", new Supplier<String>() {
@Override
public String get() {
return "foovalue3";
}
});
String v = map.get("foo");
assertEquals("foovalue", v);
assertEquals(v, v1);
assertEquals(v, v2);
assertEquals(v, v3);
}
@Test
public void testPutRemove() {
map.put("foo", new Supplier<String>() {
@Override
public String get() {
return "foovalue";
}
});
String v = map.remove("foo");
assertNull(v);
v = map.get("foo");
assertNull(v);
}
@Test
public void testPutRemoveMulti() {
map.put("foo", new Supplier<String>() {
@Override
public String get() {
return "foovalue";
}
});
map.put("foo", new Supplier<String>() {
@Override
public String get() {
return "foovalue2";
}
});
map.put("foo", new Supplier<String>() {
@Override
public String get() {
return "foovalue3";
}
});
// remove 1
String v = map.remove("foo");
assertEquals("foovalue", v);
// remove 2
v = map.remove("foo");
assertEquals("foovalue", v);
// remove 3
v = map.remove("foo");
assertNull(v);
v = map.get("foo");
assertNull(v);
}
@Test
public void testSize() {
assertEquals(0, map.size());
// put a key
map.put("foo", new Supplier<String>() {
@Override
public String get() {
return "foovalue";
}
});
assertEquals(1, map.size());
// put a different key
map.put("bar", new Supplier<String>() {
@Override
public String get() {
return "foovalue2";
}
});
assertEquals(2, map.size());
// put the same key again
map.put("bar", new Supplier<String>() {
@Override
public String get() {
return "foovalue3";
}
});
assertEquals(2, map.size()); // map should be same size
}
@Test
public void testClear() {
map.put("foo", new Supplier<String>() {
@Override
public String get() {
return "foovalue";
}
});
map.put("bar", new Supplier<String>() {
@Override
public String get() {
return "foovalue2";
}
});
map.put("baz", new Supplier<String>() {
@Override
public String get() {
return "foovalue3";
}
});
map.clear();
assertEquals(0, map.size());
}
@Test
public void testKeySet() {
map.put("foo", new Supplier<String>() {
@Override
public String get() {
return "foovalue";
}
});
map.put("bar", new Supplier<String>() {
@Override
public String get() {
return "foovalue2";
}
});
map.put("baz", new Supplier<String>() {
@Override
public String get() {
return "foovalue3";
}
});
Set<String> keys = map.keySet();
assertEquals(3, keys.size());
for (String v : Lists.newArrayList("foo", "bar", "baz")) {
assertTrue(keys.contains(v));
}
}
@Test
public void testValues() {
map.put("foo", new Supplier<String>() {
@Override
public String get() {
return "foovalue";
}
});
map.put("foo", new Supplier<String>() {
@Override
public String get() {
return "foovalue2";
}
});
map.put("bar", new Supplier<String>() {
@Override
public String get() {
return "foovalue3";
}
});
map.put("baz", new Supplier<String>() {
@Override
public String get() {
return "foovalue4";
}
});
Collection<String> values = map.values();
assertEquals(3, values.size());
for (String v : Lists.newArrayList("foovalue", "foovalue3", "foovalue4")) {
assertTrue(values.contains(v));
}
}
}

53
hbase-metrics/src/test/java/org/apache/hadoop/hbase/metrics/impl/TestTimerImpl.java Normal file
View File

@ -0,0 +1,53 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.metrics.impl;
import static org.junit.Assert.assertEquals;
import java.util.concurrent.TimeUnit;
import org.apache.hadoop.hbase.metrics.Timer;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
/**
* Test class for {@link TimerImpl}
*/
@Category(SmallTests.class)
public class TestTimerImpl {
private Timer timer;
@Before
public void setup() {
this.timer = new TimerImpl();
}
@Test
public void testUpdate() {
timer.update(40, TimeUnit.MILLISECONDS);
timer.update(41, TimeUnit.MILLISECONDS);
timer.update(42, TimeUnit.MILLISECONDS);
assertEquals(3, timer.getHistogram().getCount());
assertEquals(3, timer.getMeter().getCount());
assertEquals(TimeUnit.MILLISECONDS.toMicros(41), timer.getHistogram().snapshot().getMedian());
}
}

14
hbase-resource-bundle/src/main/resources/supplemental-models.xml
View File

@ -1065,6 +1065,20 @@ under the License.
</licenses>
</project>
</supplement>
<supplement>
<project>
<groupId>io.dropwizard.metrics</groupId>
<artifactId>metrics-core</artifactId>
<licenses>
<license>
<name>Apache License, Version 2.0</name>
<url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
<distribution>repo</distribution>
</license>
</licenses>
</project>
</supplement>
<supplement>
<project>
<groupId>org.codehaus.jettison</groupId>

8
hbase-server/pom.xml
View File

@ -397,6 +397,14 @@
<type>test-jar</type>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-metrics-api</artifactId>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-metrics</artifactId>
</dependency>
<!-- resource bundle only needed at build time -->
<dependency>
<groupId>org.apache.hbase</groupId>

10
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MasterCoprocessorEnvironment.java
View File

@ -24,10 +24,20 @@ import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.master.MasterServices;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
@InterfaceStability.Evolving
public interface MasterCoprocessorEnvironment extends CoprocessorEnvironment {
/** @return reference to the HMaster services */
MasterServices getMasterServices();
/**
* Returns a MetricRegistry that can be used to track metrics at the master level.
*
* <p>See ExampleMasterObserverWithMetrics class in the hbase-examples modules for examples
* of how metrics can be instantiated and used.</p>
* @return A MetricRegistry for the coprocessor class to track and export metrics.
*/
MetricRegistry getMetricRegistryForMaster();
}

136
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MetricsCoprocessor.java Normal file
View File

@ -0,0 +1,136 @@
/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.coprocessor;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.metrics.MetricRegistries;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
import com.google.common.annotations.VisibleForTesting;
/**
* Utility class for tracking metrics for various types of coprocessors. Each coprocessor instance
* creates its own MetricRegistry which is exported as an individual MetricSource. MetricRegistries
* are ref counted using the hbase-metric module interfaces.
*/
@InterfaceAudience.Private
public class MetricsCoprocessor {
// Master coprocessor metrics
private static final String MASTER_COPROC_METRICS_NAME = "Coprocessor.Master";
private static final String MASTER_COPROC_METRICS_CONTEXT = "master";
private static final String MASTER_COPROC_METRICS_DESCRIPTION
= "Metrics about HBase MasterObservers";
private static final String MASTER_COPROC_METRICS_JMX_CONTEXT
= "Master,sub=" + MASTER_COPROC_METRICS_NAME;
// RegionServer coprocessor metrics
private static final String RS_COPROC_METRICS_NAME = "Coprocessor.RegionServer";
private static final String RS_COPROC_METRICS_CONTEXT = "regionserver";
private static final String RS_COPROC_METRICS_DESCRIPTION
= "Metrics about HBase RegionServerObservers";
private static final String RS_COPROC_METRICS_JMX_CONTEXT = "RegionServer,sub="
+ RS_COPROC_METRICS_NAME;
// Region coprocessor metrics
private static final String REGION_COPROC_METRICS_NAME = "Coprocessor.Region";
private static final String REGION_COPROC_METRICS_CONTEXT = "regionserver";
private static final String REGION_COPROC_METRICS_DESCRIPTION
= "Metrics about HBase RegionObservers";
private static final String REGION_COPROC_METRICS_JMX_CONTEXT
= "RegionServer,sub=" + REGION_COPROC_METRICS_NAME;
// WAL coprocessor metrics
private static final String WAL_COPROC_METRICS_NAME = "Coprocessor.WAL";
private static final String WAL_COPROC_METRICS_CONTEXT = "regionserver";
private static final String WAL_COPROC_METRICS_DESCRIPTION
= "Metrics about HBase WALObservers";
private static final String WAL_COPROC_METRICS_JMX_CONTEXT
= "RegionServer,sub=" + WAL_COPROC_METRICS_NAME;
private static String suffix(String metricName, String cpName) {
return new StringBuilder(metricName)
.append(".")
.append("CP_")
.append(cpName)
.toString();
}
@VisibleForTesting
static MetricRegistryInfo createRegistryInfoForMasterCoprocessor(String clazz) {
return new MetricRegistryInfo(
suffix(MASTER_COPROC_METRICS_NAME, clazz),
MASTER_COPROC_METRICS_DESCRIPTION,
suffix(MASTER_COPROC_METRICS_JMX_CONTEXT, clazz),
MASTER_COPROC_METRICS_CONTEXT, false);
}
public static MetricRegistry createRegistryForMasterCoprocessor(String clazz) {
return MetricRegistries.global().create(createRegistryInfoForMasterCoprocessor(clazz));
}
@VisibleForTesting
static MetricRegistryInfo createRegistryInfoForRSCoprocessor(String clazz) {
return new MetricRegistryInfo(
suffix(RS_COPROC_METRICS_NAME, clazz),
RS_COPROC_METRICS_DESCRIPTION,
suffix(RS_COPROC_METRICS_JMX_CONTEXT, clazz),
RS_COPROC_METRICS_CONTEXT, false);
}
public static MetricRegistry createRegistryForRSCoprocessor(String clazz) {
return MetricRegistries.global().create(createRegistryInfoForRSCoprocessor(clazz));
}
@VisibleForTesting
public static MetricRegistryInfo createRegistryInfoForRegionCoprocessor(String clazz) {
return new MetricRegistryInfo(
suffix(REGION_COPROC_METRICS_NAME, clazz),
REGION_COPROC_METRICS_DESCRIPTION,
suffix(REGION_COPROC_METRICS_JMX_CONTEXT, clazz),
REGION_COPROC_METRICS_CONTEXT, false);
}
public static MetricRegistry createRegistryForRegionCoprocessor(String clazz) {
return MetricRegistries.global().create(createRegistryInfoForRegionCoprocessor(clazz));
}
@VisibleForTesting
public static MetricRegistryInfo createRegistryInfoForWALCoprocessor(String clazz) {
return new MetricRegistryInfo(
suffix(WAL_COPROC_METRICS_NAME, clazz),
WAL_COPROC_METRICS_DESCRIPTION,
suffix(WAL_COPROC_METRICS_JMX_CONTEXT, clazz),
WAL_COPROC_METRICS_CONTEXT, false);
}
public static MetricRegistry createRegistryForWALCoprocessor(String clazz) {
return MetricRegistries.global().create(createRegistryInfoForWALCoprocessor(clazz));
}
public static void removeRegistry(MetricRegistry registry) {
if (registry == null) {
return;
}
MetricRegistries.global().remove(registry.getMetricRegistryInfo());
}
}

24
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionCoprocessorEnvironment.java
View File

@ -21,11 +21,12 @@ package org.apache.hadoop.hbase.coprocessor;
import java.util.concurrent.ConcurrentMap;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.regionserver.Region;
import org.apache.hadoop.hbase.regionserver.RegionServerServices;
@ -43,4 +44,23 @@ public interface RegionCoprocessorEnvironment extends CoprocessorEnvironment {
/** @return shared data between all instances of this coprocessor */
ConcurrentMap<String, Object> getSharedData();
/**
* Returns a MetricRegistry that can be used to track metrics at the region server level. All
* metrics tracked at this level will be shared by all the coprocessor instances
* of the same class in the same region server process. Note that there will be one
* region coprocessor environment per region in the server, but all of these instances will share
* the same MetricRegistry. The metric instances (like Counter, Timer, etc) will also be shared
* among all of the region coprocessor instances.
*
* <p>See ExampleRegionObserverWithMetrics class in the hbase-examples modules to see examples of how
* metrics can be instantiated and used.</p>
* @return A MetricRegistry for the coprocessor class to track and export metrics.
*/
// Note: we are not exposing getMetricRegistryForRegion(). per-region metrics are already costly
// so we do not want to allow coprocessors to export metrics at the region level. We can allow
// getMetricRegistryForTable() to allow coprocessors to track metrics per-table, per-regionserver.
MetricRegistry getMetricRegistryForRegionServer();
}

10
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionServerCoprocessorEnvironment.java
View File

@ -19,6 +19,7 @@
package org.apache.hadoop.hbase.coprocessor;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.regionserver.RegionServerServices;
public interface RegionServerCoprocessorEnvironment extends CoprocessorEnvironment {
@ -28,4 +29,13 @@ public interface RegionServerCoprocessorEnvironment extends CoprocessorEnvironme
* @return the region server services
*/
RegionServerServices getRegionServerServices();
/**
* Returns a MetricRegistry that can be used to track metrics at the region server level.
*
* <p>See ExampleMasterObserverWithMetrics class in the hbase-examples modules for examples
* of how metrics can be instantiated and used.</p>
* @return A MetricRegistry for the coprocessor class to track and export metrics.
*/
MetricRegistry getMetricRegistryForRegionServer();
}

10
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/WALCoprocessorEnvironment.java
View File

@ -23,6 +23,7 @@ import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.wal.WAL;
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
@ -30,4 +31,13 @@ import org.apache.hadoop.hbase.wal.WAL;
public interface WALCoprocessorEnvironment extends CoprocessorEnvironment {
/** @return reference to the region server's WAL */
WAL getWAL();
/**
* Returns a MetricRegistry that can be used to track metrics at the region server level.
*
* <p>See ExampleRegionServerObserverWithMetrics class in the hbase-examples modules for examples
* of how metrics can be instantiated and used.</p>
* @return A MetricRegistry for the coprocessor class to track and export metrics.
*/
MetricRegistry getMetricRegistryForRegionServer();
}

2
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/AgeSnapshot.java
View File

@ -17,7 +17,7 @@
*/
package org.apache.hadoop.hbase.io.hfile;
import org.apache.hadoop.hbase.util.FastLongHistogram;
import org.apache.hadoop.hbase.metrics.impl.FastLongHistogram;
import org.codehaus.jackson.annotate.JsonIgnoreProperties;
/**

2
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.java
View File

@ -25,7 +25,7 @@ import java.util.concurrent.ConcurrentSkipListSet;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.util.FastLongHistogram;
import org.apache.hadoop.hbase.metrics.impl.FastLongHistogram;
import org.codehaus.jackson.JsonGenerationException;
import org.codehaus.jackson.annotate.JsonIgnoreProperties;
import org.codehaus.jackson.map.JsonMappingException;

2
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/CacheStats.java
View File

@ -21,9 +21,9 @@ package org.apache.hadoop.hbase.io.hfile;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.metrics.impl.FastLongHistogram;
import org.apache.hadoop.hbase.util.Counter;
import org.apache.hadoop.hbase.util.FastLongHistogram;
/**
* Class that implements cache metrics.

25
hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterCoprocessorHost.java
View File

@ -36,8 +36,14 @@ import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.coprocessor.*;
import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
import org.apache.hadoop.hbase.coprocessor.CoprocessorService;
import org.apache.hadoop.hbase.coprocessor.MasterCoprocessorEnvironment;
import org.apache.hadoop.hbase.coprocessor.MasterObserver;
import org.apache.hadoop.hbase.coprocessor.MetricsCoprocessor;
import org.apache.hadoop.hbase.coprocessor.ObserverContext;
import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
import org.apache.hadoop.hbase.protobuf.generated.QuotaProtos.Quotas;
import org.apache.hadoop.hbase.protobuf.generated.SnapshotProtos.SnapshotDescription;
@ -59,18 +65,33 @@ public class MasterCoprocessorHost
*/
static class MasterEnvironment extends CoprocessorHost.Environment
implements MasterCoprocessorEnvironment {
private MasterServices masterServices;
private final MasterServices masterServices;
private final MetricRegistry metricRegistry;
public MasterEnvironment(final Class<?> implClass, final Coprocessor impl,
final int priority, final int seq, final Configuration conf,
final MasterServices services) {
super(impl, priority, seq, conf);
this.masterServices = services;
this.metricRegistry =
MetricsCoprocessor.createRegistryForMasterCoprocessor(implClass.getName());
}
@Override
public MasterServices getMasterServices() {
return masterServices;
}
@Override
public MetricRegistry getMetricRegistryForMaster() {
return metricRegistry;
}
@Override
protected void shutdown() {
super.shutdown();
MetricsCoprocessor.removeRegistry(this.metricRegistry);
}
}
private MasterServices masterServices;

21
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServer.java
View File

@ -17,10 +17,14 @@
*/
package org.apache.hadoop.hbase.regionserver;
import com.google.common.annotations.VisibleForTesting;
import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
import org.apache.hadoop.hbase.metrics.MetricRegistries;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.metrics.Timer;
import com.google.common.annotations.VisibleForTesting;
/**
* <p>
@ -36,11 +40,20 @@ public class MetricsRegionServer {
private MetricsRegionServerSource serverSource;
private MetricsRegionServerWrapper regionServerWrapper;
private MetricRegistry metricRegistry;
private Timer bulkLoadTimer;
public MetricsRegionServer(MetricsRegionServerWrapper regionServerWrapper) {
this(regionServerWrapper,
CompatibilitySingletonFactory.getInstance(MetricsRegionServerSourceFactory.class)
.createServer(regionServerWrapper));
// Create hbase-metrics module based metrics. The registry should already be registered by the
// MetricsRegionServerSource
metricRegistry = MetricRegistries.global().get(serverSource.getMetricRegistryInfo()).get();
// create and use metrics from the new hbase-metrics based registry.
bulkLoadTimer = metricRegistry.timer("Bulkload");
}
MetricsRegionServer(MetricsRegionServerWrapper regionServerWrapper,
@ -131,4 +144,8 @@ public class MetricsRegionServer {
serverSource.updateCompactionInputSize(isMajor, inputBytes);
serverSource.updateCompactionOutputSize(isMajor, outputBytes);
}
public void updateBulkLoad(long millis) {
this.bulkLoadTimer.updateMillis(millis);
}
}

8
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
View File

@ -197,6 +197,8 @@ import org.apache.hadoop.hbase.wal.WALSplitter;
import org.apache.hadoop.hbase.zookeeper.ZKSplitLog;
import org.apache.zookeeper.KeeperException;
import com.google.common.annotations.VisibleForTesting;
/**
* Implements the regionserver RPC services.
*/
@ -2061,6 +2063,7 @@ public class RSRpcServices implements HBaseRPCErrorHandler,
@Override
public BulkLoadHFileResponse bulkLoadHFile(final RpcController controller,
final BulkLoadHFileRequest request) throws ServiceException {
long start = EnvironmentEdgeManager.currentTime();
try {
checkOpen();
requestCount.increment();
@ -2089,6 +2092,11 @@ public class RSRpcServices implements HBaseRPCErrorHandler,
return builder.build();
} catch (IOException ie) {
throw new ServiceException(ie);
} finally {
if (regionServer.metricsRegionServer != null) {
regionServer.metricsRegionServer.updateBulkLoad(
EnvironmentEdgeManager.currentTime() - start);
}
}
}

20
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionCoprocessorHost.java
View File

@ -60,6 +60,7 @@ import org.apache.hadoop.hbase.coprocessor.BaseRegionObserver;
import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
import org.apache.hadoop.hbase.coprocessor.CoprocessorService;
import org.apache.hadoop.hbase.coprocessor.EndpointObserver;
import org.apache.hadoop.hbase.coprocessor.MetricsCoprocessor;
import org.apache.hadoop.hbase.coprocessor.ObserverContext;
import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
import org.apache.hadoop.hbase.coprocessor.RegionObserver;
@ -70,6 +71,8 @@ import org.apache.hadoop.hbase.io.FSDataInputStreamWrapper;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.hbase.io.Reference;
import org.apache.hadoop.hbase.io.hfile.CacheConfig;
import org.apache.hadoop.hbase.ipc.RpcServer;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.regionserver.Region.Operation;
import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest;
import org.apache.hadoop.hbase.regionserver.querymatcher.DeleteTracker;
@ -85,6 +88,11 @@ import com.google.common.collect.Lists;
import com.google.protobuf.Message;
import com.google.protobuf.Service;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import com.google.protobuf.Message;
import com.google.protobuf.Service;
/**
* Implements the coprocessor environment and runtime support for coprocessors
* loaded within a {@link Region}.
@ -103,7 +111,7 @@ public class RegionCoprocessorHost
private final boolean hasCustomPostScannerFilterRow;
/**
*
*
* Encapsulation of the environment of each coprocessor
*/
static class RegionEnvironment extends CoprocessorHost.Environment
@ -114,6 +122,7 @@ public class RegionCoprocessorHost
ConcurrentMap<String, Object> sharedData;
private final boolean useLegacyPre;
private final boolean useLegacyPost;
private final MetricRegistry metricRegistry;
/**
* Constructor
@ -135,6 +144,8 @@ public class RegionCoprocessorHost
HRegionInfo.class, WALKey.class, WALEdit.class);
useLegacyPost = useLegacyMethod(impl.getClass(), "postWALRestore", ObserverContext.class,
HRegionInfo.class, WALKey.class, WALEdit.class);
this.metricRegistry =
MetricsCoprocessor.createRegistryForRegionCoprocessor(impl.getClass().getName());
}
/** @return the region */
@ -151,6 +162,7 @@ public class RegionCoprocessorHost
public void shutdown() {
super.shutdown();
MetricsCoprocessor.removeRegistry(this.metricRegistry);
}
@Override
@ -163,6 +175,10 @@ public class RegionCoprocessorHost
return region.getRegionInfo();
}
@Override
public MetricRegistry getMetricRegistryForRegionServer() {
return metricRegistry;
}
}
static class TableCoprocessorAttribute {
@ -358,7 +374,7 @@ public class RegionCoprocessorHost
// scan the table attributes for coprocessor load specifications
// initialize the coprocessors
List<RegionEnvironment> configured = new ArrayList<RegionEnvironment>();
for (TableCoprocessorAttribute attr: getTableCoprocessorAttrsFromSchema(conf,
for (TableCoprocessorAttribute attr: getTableCoprocessorAttrsFromSchema(conf,
region.getTableDesc())) {
// Load encompasses classloading and coprocessor initialization
try {

29
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionServerCoprocessorHost.java
View File

@ -25,22 +25,27 @@ import java.util.List;
import org.apache.commons.lang.ClassUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.CellScanner;
import org.apache.hadoop.hbase.Coprocessor;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.MetaMutationAnnotation;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.hbase.client.Mutation;
import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
import org.apache.hadoop.hbase.coprocessor.MetricsCoprocessor;
import org.apache.hadoop.hbase.coprocessor.ObserverContext;
import org.apache.hadoop.hbase.coprocessor.RegionServerCoprocessorEnvironment;
import org.apache.hadoop.hbase.coprocessor.RegionServerObserver;
import org.apache.hadoop.hbase.coprocessor.SingletonCoprocessorService;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.WALEntry;
import org.apache.hadoop.hbase.ipc.RpcServer;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.replication.ReplicationEndpoint;
import org.apache.hadoop.hbase.security.User;
import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.WALEntry;
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
@InterfaceStability.Evolving
@ -324,8 +329,8 @@ public class RegionServerCoprocessorHost extends
*/
static class RegionServerEnvironment extends CoprocessorHost.Environment
implements RegionServerCoprocessorEnvironment {
private RegionServerServices regionServerServices;
private final RegionServerServices regionServerServices;
private final MetricRegistry metricRegistry;
@edu.umd.cs.findbugs.annotations.SuppressWarnings(value="BC_UNCONFIRMED_CAST",
justification="Intentional; FB has trouble detecting isAssignableFrom")
@ -342,12 +347,25 @@ public class RegionServerCoprocessorHost extends
break;
}
}
this.metricRegistry =
MetricsCoprocessor.createRegistryForRSCoprocessor(implClass.getName());
}
@Override
public RegionServerServices getRegionServerServices() {
return regionServerServices;
}
@Override
public MetricRegistry getMetricRegistryForRegionServer() {
return metricRegistry;
}
@Override
protected void shutdown() {
super.shutdown();
MetricsCoprocessor.removeRegistry(metricRegistry);
}
}
/**
@ -356,6 +374,7 @@ public class RegionServerCoprocessorHost extends
*/
static class EnvironmentPriorityComparator implements
Comparator<CoprocessorEnvironment> {
@Override
public int compare(final CoprocessorEnvironment env1,
final CoprocessorEnvironment env2) {
if (env1.getPriority() < env2.getPriority()) {

19
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALCoprocessorHost.java
View File

@ -29,6 +29,12 @@ import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.coprocessor.*;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
import org.apache.hadoop.hbase.coprocessor.MetricsCoprocessor;
import org.apache.hadoop.hbase.coprocessor.ObserverContext;
import org.apache.hadoop.hbase.coprocessor.WALCoprocessorEnvironment;
import org.apache.hadoop.hbase.coprocessor.WALObserver;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.wal.WAL;
import org.apache.hadoop.hbase.wal.WALKey;
@ -50,6 +56,7 @@ public class WALCoprocessorHost
final boolean useLegacyPre;
final boolean useLegacyPost;
private final MetricRegistry metricRegistry;
@Override
public WAL getWAL() {
@ -78,6 +85,18 @@ public class WALCoprocessorHost
HRegionInfo.class, WALKey.class, WALEdit.class);
useLegacyPost = useLegacyMethod(impl.getClass(), "postWALWrite", ObserverContext.class,
HRegionInfo.class, WALKey.class, WALEdit.class);
this.metricRegistry = MetricsCoprocessor.createRegistryForWALCoprocessor(implClass.getName());
}
@Override
public MetricRegistry getMetricRegistryForRegionServer() {
return metricRegistry;
}
@Override
protected void shutdown() {
super.shutdown();
MetricsCoprocessor.removeRegistry(this.metricRegistry);
}
}

7
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/MetricsSource.java
View File

@ -27,6 +27,7 @@ import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.metrics.BaseSource;
import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
/**
@ -338,4 +339,10 @@ public class MetricsSource implements BaseSource {
public String getMetricsName() {
return globalSourceSource.getMetricsName();
}
@Override
public MetricRegistryInfo getMetricRegistryInfo() {
return new MetricRegistryInfo(getMetricsName(), getMetricsDescription(),
getMetricsContext(), getMetricsJmxContext(), true);
}
}

10
hbase-server/src/test/java/org/apache/hadoop/hbase/MiniHBaseCluster.java
View File

@ -660,6 +660,16 @@ public class MiniHBaseCluster extends HBaseCluster {
return hbaseCluster.getRegionServer(serverNumber);
}
public HRegionServer getRegionServer(ServerName serverName) {
for (RegionServerThread t : hbaseCluster.getRegionServers()) {
HRegionServer r = t.getRegionServer();
if (r.getServerName().equals(serverName)) {
return r;
}
}
return null;
}
public List<HRegion> getRegions(byte[] tableName) {
return getRegions(TableName.valueOf(tableName));
}

549
hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestCoprocessorMetrics.java Normal file
View File

@ -0,0 +1,549 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.coprocessor;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HRegionLocation;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.Waiter.Predicate;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.Mutation;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.RegionLocator;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel;
import org.apache.hadoop.hbase.metrics.Counter;
import org.apache.hadoop.hbase.metrics.Metric;
import org.apache.hadoop.hbase.metrics.MetricRegistries;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
import org.apache.hadoop.hbase.metrics.Timer;
import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos;
import org.apache.hadoop.hbase.protobuf.generated.MultiRowMutationProtos.MultiRowMutationService;
import org.apache.hadoop.hbase.protobuf.generated.MultiRowMutationProtos.MutateRowsRequest;
import org.apache.hadoop.hbase.protobuf.generated.MultiRowMutationProtos.MutateRowsResponse;
import org.apache.hadoop.hbase.regionserver.HRegionServer;
import org.apache.hadoop.hbase.regionserver.wal.WALEdit;
import org.apache.hadoop.hbase.testclassification.CoprocessorTests;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import com.google.common.base.Optional;
import com.google.common.collect.Lists;
import com.google.protobuf.RpcCallback;
import com.google.protobuf.RpcController;
import com.google.protobuf.ServiceException;
/**
* Testing of coprocessor metrics end-to-end.
*/
@Category({CoprocessorTests.class, MediumTests.class})
public class TestCoprocessorMetrics {
private static final Log LOG = LogFactory.getLog(TestCoprocessorMetrics.class);
private static final HBaseTestingUtility UTIL = new HBaseTestingUtility();
private static final byte[] foo = Bytes.toBytes("foo");
private static final byte[] bar = Bytes.toBytes("bar");
/**
* MasterObserver that has a Timer metric for create table operation.
*/
public static class CustomMasterObserver extends BaseMasterObserver {
private Timer createTableTimer;
private long start = Long.MIN_VALUE;
@Override
public void preCreateTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
HTableDescriptor desc, HRegionInfo[] regions) throws IOException {
super.preCreateTable(ctx, desc, regions);
// we rely on the fact that there is only 1 instance of our MasterObserver
this.start = System.currentTimeMillis();
}
@Override
public void postCreateTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
HTableDescriptor desc, HRegionInfo[] regions) throws IOException {
super.postCreateTable(ctx, desc, regions);
if (this.start > 0) {
long time = System.currentTimeMillis() - start;
LOG.info("Create table took: " + time);
createTableTimer.updateMillis(time);
}
}
@Override
public void start(CoprocessorEnvironment env) throws IOException {
super.start(env);
if (env instanceof MasterCoprocessorEnvironment) {
MetricRegistry registry =
((MasterCoprocessorEnvironment) env).getMetricRegistryForMaster();
createTableTimer = registry.timer("CreateTable");
}
}
}
/**
* RegionServerObserver that has a Counter for rollWAL requests.
*/
public static class CustomRegionServerObserver extends BaseRegionServerObserver {
/** This is the Counter metric object to keep track of the current count across invocations */
private Counter rollWALCounter;
@Override
public void postRollWALWriterRequest(ObserverContext<RegionServerCoprocessorEnvironment> ctx)
throws IOException {
// Increment the Counter whenever the coprocessor is called
rollWALCounter.increment();
super.postRollWALWriterRequest(ctx);
}
@Override
public void start(CoprocessorEnvironment env) throws IOException {
super.start(env);
if (env instanceof RegionServerCoprocessorEnvironment) {
MetricRegistry registry =
((RegionServerCoprocessorEnvironment) env).getMetricRegistryForRegionServer();
if (rollWALCounter == null) {
rollWALCounter = registry.counter("rollWALRequests");
}
}
}
}
/**
* WALObserver that has a Counter for walEdits written.
*/
public static class CustomWALObserver extends BaseWALObserver {
private Counter walEditsCount;
@Override
public void postWALWrite(ObserverContext<? extends WALCoprocessorEnvironment> ctx,
HRegionInfo info, org.apache.hadoop.hbase.wal.WALKey logKey,
WALEdit logEdit) throws IOException {
super.postWALWrite(ctx, info, logKey, logEdit);
walEditsCount.increment();
}
@Override
public void start(CoprocessorEnvironment env) throws IOException {
super.start(env);
if (env instanceof WALCoprocessorEnvironment) {
MetricRegistry registry =
((WALCoprocessorEnvironment) env).getMetricRegistryForRegionServer();
if (walEditsCount == null) {
walEditsCount = registry.counter("walEditsCount");
}
}
}
}
/**
* RegionObserver that has a Counter for preGet()
*/
public static class CustomRegionObserver extends BaseRegionObserver {
private Counter preGetCounter;
@Override
public void preGetOp(ObserverContext<RegionCoprocessorEnvironment> e, Get get,
List<Cell> results) throws IOException {
super.preGetOp(e, get, results);
preGetCounter.increment();
}
@Override
public void start(CoprocessorEnvironment env) throws IOException {
super.start(env);
if (env instanceof RegionCoprocessorEnvironment) {
MetricRegistry registry =
((RegionCoprocessorEnvironment) env).getMetricRegistryForRegionServer();
if (preGetCounter == null) {
preGetCounter = registry.counter("preGetRequests");
}
}
}
}
public static class CustomRegionObserver2 extends CustomRegionObserver {
}
/**
* RegionEndpoint to test metrics from endpoint calls
*/
public static class CustomRegionEndpoint extends MultiRowMutationEndpoint {
private Timer endpointExecution;
@Override
public void mutateRows(RpcController controller, MutateRowsRequest request,
RpcCallback<MutateRowsResponse> done) {
long start = System.nanoTime();
super.mutateRows(controller, request, done);
endpointExecution.updateNanos(System.nanoTime() - start);
}
@Override
public void start(CoprocessorEnvironment env) throws IOException {
super.start(env);
if (env instanceof RegionCoprocessorEnvironment) {
MetricRegistry registry =
((RegionCoprocessorEnvironment) env).getMetricRegistryForRegionServer();
if (endpointExecution == null) {
endpointExecution = registry.timer("EndpointExecution");
}
}
}
}
@BeforeClass
public static void setupBeforeClass() throws Exception {
Configuration conf = UTIL.getConfiguration();
// inject master, regionserver and WAL coprocessors
conf.set(CoprocessorHost.MASTER_COPROCESSOR_CONF_KEY,
CustomMasterObserver.class.getName());
conf.set(CoprocessorHost.REGIONSERVER_COPROCESSOR_CONF_KEY,
CustomRegionServerObserver.class.getName());
conf.set(CoprocessorHost.WAL_COPROCESSOR_CONF_KEY,
CustomWALObserver.class.getName());
conf.setBoolean(CoprocessorHost.ABORT_ON_ERROR_KEY, true);
UTIL.startMiniCluster();
}
@AfterClass
public static void teardownAfterClass() throws Exception {
UTIL.shutdownMiniCluster();
}
@Before
public void setup() throws IOException {
try (Connection connection = ConnectionFactory.createConnection(UTIL.getConfiguration());
Admin admin = connection.getAdmin()) {
for (HTableDescriptor htd : admin.listTables()) {
UTIL.deleteTable(htd.getTableName());
}
}
}
@Test
public void testMasterObserver() throws IOException {
// Find out the MetricRegistry used by the CP using the global registries
MetricRegistryInfo info = MetricsCoprocessor.createRegistryInfoForMasterCoprocessor(
CustomMasterObserver.class.getName());
Optional<MetricRegistry> registry = MetricRegistries.global().get(info);
assertTrue(registry.isPresent());
Optional<Metric> metric = registry.get().get("CreateTable");
assertTrue(metric.isPresent());
try (Connection connection = ConnectionFactory.createConnection(UTIL.getConfiguration());
Admin admin = connection.getAdmin()) {
Timer createTableTimer = (Timer)metric.get();
long prevCount = createTableTimer.getHistogram().getCount();
LOG.info("Creating table");
admin.createTable(
new HTableDescriptor("testMasterObserver")
.addFamily(new HColumnDescriptor("foo")));
assertEquals(1, createTableTimer.getHistogram().getCount() - prevCount);
}
}
@Test
public void testRegionServerObserver() throws IOException {
try (Connection connection = ConnectionFactory.createConnection(UTIL.getConfiguration());
Admin admin = connection.getAdmin()) {
LOG.info("Rolling WALs");
admin.rollWALWriter(UTIL.getMiniHBaseCluster().getServerHoldingMeta());
}
// Find out the MetricRegistry used by the CP using the global registries
MetricRegistryInfo info = MetricsCoprocessor.createRegistryInfoForRSCoprocessor(
CustomRegionServerObserver.class.getName());
Optional<MetricRegistry> registry = MetricRegistries.global().get(info);
assertTrue(registry.isPresent());
Optional<Metric> metric = registry.get().get("rollWALRequests");
assertTrue(metric.isPresent());
Counter rollWalRequests = (Counter)metric.get();
assertEquals(1, rollWalRequests.getCount());
}
@Test
public void testWALObserver() throws IOException {
// Find out the MetricRegistry used by the CP using the global registries
MetricRegistryInfo info = MetricsCoprocessor.createRegistryInfoForWALCoprocessor(
CustomWALObserver.class.getName());
Optional<MetricRegistry> registry = MetricRegistries.global().get(info);
assertTrue(registry.isPresent());
Optional<Metric> metric = registry.get().get("walEditsCount");
assertTrue(metric.isPresent());
try (Connection connection = ConnectionFactory.createConnection(UTIL.getConfiguration());
Admin admin = connection.getAdmin()) {
admin.createTable(
new HTableDescriptor("testWALObserver")
.addFamily(new HColumnDescriptor("foo")));
Counter rollWalRequests = (Counter)metric.get();
long prevCount = rollWalRequests.getCount();
assertTrue(prevCount > 0);
try (Table table = connection.getTable(TableName.valueOf("testWALObserver"))) {
table.put(new Put(foo).addColumn(foo, foo, foo));
}
assertEquals(1, rollWalRequests.getCount() - prevCount);
}
}
/**
* Helper for below tests
*/
private void assertPreGetRequestsCounter(Class<?> coprocClass) {
// Find out the MetricRegistry used by the CP using the global registries
MetricRegistryInfo info = MetricsCoprocessor.createRegistryInfoForRegionCoprocessor(
coprocClass.getName());
Optional<MetricRegistry> registry = MetricRegistries.global().get(info);
assertTrue(registry.isPresent());
Optional<Metric> metric = registry.get().get("preGetRequests");
assertTrue(metric.isPresent());
Counter preGetRequests = (Counter)metric.get();
assertEquals(2, preGetRequests.getCount());
}
@Test
public void testRegionObserverSingleRegion() throws IOException {
TableName tableName = TableName.valueOf("testRegionObserverSingleRegion");
try (Connection connection = ConnectionFactory.createConnection(UTIL.getConfiguration());
Admin admin = connection.getAdmin()) {
admin.createTable(
new HTableDescriptor(tableName)
.addFamily(new HColumnDescriptor(foo))
// add the coprocessor for the region
.addCoprocessor(CustomRegionObserver.class.getName()));
try (Table table = connection.getTable(tableName)) {
table.get(new Get(foo));
table.get(new Get(foo)); // 2 gets
}
}
assertPreGetRequestsCounter(CustomRegionObserver.class);
}
@Test
public void testRegionObserverMultiRegion() throws IOException {
TableName tableName = TableName.valueOf("testRegionObserverMultiRegion");
try (Connection connection = ConnectionFactory.createConnection(UTIL.getConfiguration());
Admin admin = connection.getAdmin()) {
admin.createTable(
new HTableDescriptor(tableName)
.addFamily(new HColumnDescriptor(foo))
// add the coprocessor for the region
.addCoprocessor(CustomRegionObserver.class.getName())
, new byte[][]{foo}); // create with 2 regions
try (Table table = connection.getTable(tableName);
RegionLocator locator = connection.getRegionLocator(tableName)) {
table.get(new Get(bar));
table.get(new Get(foo)); // 2 gets to 2 separate regions
assertEquals(2, locator.getAllRegionLocations().size());
assertNotEquals(locator.getRegionLocation(bar).getRegionInfo(),
locator.getRegionLocation(foo).getRegionInfo());
}
}
assertPreGetRequestsCounter(CustomRegionObserver.class);
}
@Test
public void testRegionObserverMultiTable() throws IOException {
TableName tableName1 = TableName.valueOf("testRegionObserverMultiTable1");
TableName tableName2 = TableName.valueOf("testRegionObserverMultiTable2");
try (Connection connection = ConnectionFactory.createConnection(UTIL.getConfiguration());
Admin admin = connection.getAdmin()) {
admin.createTable(
new HTableDescriptor(tableName1)
.addFamily(new HColumnDescriptor(foo))
// add the coprocessor for the region
.addCoprocessor(CustomRegionObserver.class.getName()));
admin.createTable(
new HTableDescriptor(tableName2)
.addFamily(new HColumnDescriptor(foo))
// add the coprocessor for the region
.addCoprocessor(CustomRegionObserver.class.getName()));
try (Table table1 = connection.getTable(tableName1);
Table table2 = connection.getTable(tableName2);) {
table1.get(new Get(bar));
table2.get(new Get(foo)); // 2 gets to 2 separate tables
}
}
assertPreGetRequestsCounter(CustomRegionObserver.class);
}
@Test
public void testRegionObserverMultiCoprocessor() throws IOException {
TableName tableName = TableName.valueOf("testRegionObserverMultiCoprocessor");
try (Connection connection = ConnectionFactory.createConnection(UTIL.getConfiguration());
Admin admin = connection.getAdmin()) {
admin.createTable(
new HTableDescriptor(tableName)
.addFamily(new HColumnDescriptor(foo))
// add the coprocessor for the region. We add two different coprocessors
.addCoprocessor(CustomRegionObserver.class.getName())
.addCoprocessor(CustomRegionObserver2.class.getName()));
try (Table table = connection.getTable(tableName)) {
table.get(new Get(foo));
table.get(new Get(foo)); // 2 gets
}
}
// we will have two counters coming from two coprocs, in two different MetricRegistries
assertPreGetRequestsCounter(CustomRegionObserver.class);
assertPreGetRequestsCounter(CustomRegionObserver2.class);
}
@Test
public void testRegionObserverAfterRegionClosed() throws IOException {
TableName tableName = TableName.valueOf("testRegionObserverAfterRegionClosed");
try (Connection connection = ConnectionFactory.createConnection(UTIL.getConfiguration());
Admin admin = connection.getAdmin()) {
admin.createTable(
new HTableDescriptor(tableName)
.addFamily(new HColumnDescriptor(foo))
// add the coprocessor for the region
.addCoprocessor(CustomRegionObserver.class.getName())
, new byte[][]{foo}); // create with 2 regions
try (Table table = connection.getTable(tableName)) {
table.get(new Get(foo));
table.get(new Get(foo)); // 2 gets
}
assertPreGetRequestsCounter(CustomRegionObserver.class);
// close one of the regions
try (RegionLocator locator = connection.getRegionLocator(tableName)) {
final HRegionLocation loc = locator.getRegionLocation(foo);
admin.closeRegion(loc.getServerName(), loc.getRegionInfo());
final HRegionServer server = UTIL.getMiniHBaseCluster().getRegionServer(loc.getServerName());
UTIL.waitFor(30000,new Predicate<IOException>() {
@Override
public boolean evaluate() throws IOException {
return server.getOnlineRegion(loc.getRegionInfo().getRegionName()) == null;
}
});
assertNull(server.getOnlineRegion(loc.getRegionInfo().getRegionName()));
}
// with only 1 region remaining, we should still be able to find the Counter
assertPreGetRequestsCounter(CustomRegionObserver.class);
// close the table
admin.disableTable(tableName);
MetricRegistryInfo info = MetricsCoprocessor.createRegistryInfoForRegionCoprocessor(
CustomRegionObserver.class.getName());
// ensure that MetricRegistry is deleted
Optional<MetricRegistry> registry = MetricRegistries.global().get(info);
assertFalse(registry.isPresent());
}
}
@Test
public void testRegionObserverEndpoint() throws IOException, ServiceException {
TableName tableName = TableName.valueOf("testRegionObserverEndpoint");
try (Connection connection = ConnectionFactory.createConnection(UTIL.getConfiguration());
Admin admin = connection.getAdmin()) {
admin.createTable(
new HTableDescriptor(tableName)
.addFamily(new HColumnDescriptor(foo))
// add the coprocessor for the region
.addCoprocessor(CustomRegionEndpoint.class.getName()));
try (Table table = connection.getTable(tableName)) {
List<Put> mutations = Lists.newArrayList(new Put(foo), new Put(bar));
MutateRowsRequest.Builder mrmBuilder = MutateRowsRequest.newBuilder();
for (Mutation mutation : mutations) {
mrmBuilder.addMutationRequest(ProtobufUtil.toMutation(
ClientProtos.MutationProto.MutationType.PUT, mutation));
}
CoprocessorRpcChannel channel = table.coprocessorService(bar);
MultiRowMutationService.BlockingInterface service =
MultiRowMutationService.newBlockingStub(channel);
MutateRowsRequest mrm = mrmBuilder.build();
service.mutateRows(null, mrm);
}
}
// Find out the MetricRegistry used by the CP using the global registries
MetricRegistryInfo info = MetricsCoprocessor.createRegistryInfoForRegionCoprocessor(
CustomRegionEndpoint.class.getName());
Optional<MetricRegistry> registry = MetricRegistries.global().get(info);
assertTrue(registry.isPresent());
Optional<Metric> metric = registry.get().get("EndpointExecution");
assertTrue(metric.isPresent());
Timer endpointExecutions = (Timer)metric.get();
assertEquals(1, endpointExecutions.getHistogram().getCount());
}
}

6
hbase-server/src/test/java/org/apache/hadoop/hbase/security/token/TestTokenAuthentication.java
View File

@ -58,6 +58,7 @@ import org.apache.hadoop.hbase.ipc.RpcServer;
import org.apache.hadoop.hbase.ipc.RpcServer.BlockingServiceAndInterface;
import org.apache.hadoop.hbase.ipc.RpcServerInterface;
import org.apache.hadoop.hbase.ipc.ServerRpcController;
import org.apache.hadoop.hbase.metrics.MetricRegistry;
import org.apache.hadoop.hbase.protobuf.generated.AuthenticationProtos;
import org.apache.hadoop.hbase.regionserver.HRegion;
import org.apache.hadoop.hbase.regionserver.RegionServerServices;
@ -216,6 +217,11 @@ public class TestTokenAuthentication {
@Override
public ConcurrentMap<String, Object> getSharedData() { return null; }
@Override
public MetricRegistry getMetricRegistryForRegionServer() {
return null;
}
@Override
public int getVersion() { return 0; }

31
pom.xml
View File

@ -81,6 +81,8 @@
<module>hbase-external-blockcache</module>
<module>hbase-shaded</module>
<module>hbase-archetypes</module>
<module>hbase-metrics-api</module>
<module>hbase-metrics</module>
</modules>
<!--Add apache snapshots in case we want to use unreleased versions of plugins:
e.g. surefire 2.18-SNAPSHOT-->
@ -1430,6 +1432,30 @@
<groupId>org.apache.hbase</groupId>
<version>${project.version}</version>
</dependency>
<dependency>
<artifactId>hbase-metrics-api</artifactId>
<groupId>org.apache.hbase</groupId>
<version>${project.version}</version>
</dependency>
<dependency>
<artifactId>hbase-metrics-api</artifactId>
<groupId>org.apache.hbase</groupId>
<version>${project.version}</version>
<type>test-jar</type>
<scope>test</scope>
</dependency>
<dependency>
<artifactId>hbase-metrics</artifactId>
<groupId>org.apache.hbase</groupId>
<version>${project.version}</version>
</dependency>
<dependency>
<artifactId>hbase-metrics</artifactId>
<groupId>org.apache.hbase</groupId>
<version>${project.version}</version>
<type>test-jar</type>
<scope>test</scope>
</dependency>
<!-- General dependencies -->
<dependency>
<groupId>com.github.stephenc.findbugs</groupId>
@ -1459,6 +1485,11 @@
<artifactId>metrics-core</artifactId>
<version>${metrics-core.version}</version>
</dependency>
<dependency>
<groupId>io.dropwizard.metrics</groupId>
<artifactId>metrics-core</artifactId>
<version>3.1.2</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>