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HBASE-15994 Allow selection of RpcSchedulers Adds logging by the RpcExecutors of their run configs Changes the default RpcSchedulerFactory from SimpleRpcSchedulerFactory.class to RpcSchedulerFactoryImpl.class. RpcSchedulerFactoryImpl.class. defaults to using SimpleRpcSchedulerFactory.class and the SimpleRpcScheduler, as has been default up to this, unless you set "hbase.region.server.rpc.scheduler.class" to org.apache.hadoop.hbase.ipc.FifoRpcScheduler 

Signed-off-by: stack <stack@apache.org>
This commit is contained in:
stack 2016-06-08 09:53:51 -07:00
parent a7172d5611
commit 3ac4a57fd2
7 changed files with 161 additions and 30 deletions
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4
hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/BalancedQueueRpcExecutor.java
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@ -22,6 +22,8 @@ import java.util.List;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Abortable;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
@ -36,6 +38,7 @@ import org.apache.hadoop.hbase.util.ReflectionUtils;
@InterfaceAudience.LimitedPrivate({ HBaseInterfaceAudience.COPROC, HBaseInterfaceAudience.PHOENIX })
@InterfaceStability.Evolving
public class BalancedQueueRpcExecutor extends RpcExecutor {
private static final Log LOG = LogFactory.getLog(BalancedQueueRpcExecutor.class);
protected final List<BlockingQueue<CallRunner>> queues;
private final QueueBalancer balancer;
@ -62,6 +65,7 @@ public class BalancedQueueRpcExecutor extends RpcExecutor {
queues = new ArrayList<BlockingQueue<CallRunner>>(numQueues);
this.balancer = getBalancer(numQueues);
initializeQueues(numQueues, queueClass, initargs);
LOG.debug(name + " queues=" + numQueues + " handlerCount=" + handlerCount);
}
protected void initializeQueues(final int numQueues,

5
hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.java
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@ -17,6 +17,8 @@
*/
package org.apache.hadoop.hbase.ipc;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.DaemonThreadFactory;
@ -32,6 +34,7 @@ import java.util.concurrent.atomic.AtomicInteger;
* This can be used for HMaster, where no prioritization is needed.
*/
public class FifoRpcScheduler extends RpcScheduler {
private static final Log LOG = LogFactory.getLog(FifoRpcScheduler.class);
private final int handlerCount;
private final int maxQueueLength;
private final AtomicInteger queueSize = new AtomicInteger(0);
@ -41,6 +44,8 @@ public class FifoRpcScheduler extends RpcScheduler {
this.handlerCount = handlerCount;
this.maxQueueLength = conf.getInt(RpcScheduler.IPC_SERVER_MAX_CALLQUEUE_LENGTH,
handlerCount * RpcServer.DEFAULT_MAX_CALLQUEUE_LENGTH_PER_HANDLER);
LOG.info("Using " + this.getClass().getSimpleName() + " as user call queue; handlerCount=" +
handlerCount + "; maxQueueLength=" + maxQueueLength);
}
@Override

54
hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/SimpleRpcScheduler.java
View File

@ -34,8 +34,11 @@ import org.apache.hadoop.hbase.conf.ConfigurationObserver;
import org.apache.hadoop.hbase.util.BoundedPriorityBlockingQueue;
/**
* A scheduler that maintains isolated handler pools for general,
* high-priority, and replication requests.
* The default scheduler. Configurable. Maintains isolated handler pools for general ('default'),
* high-priority ('priority'), and replication ('replication') requests. Default behavior is to
* balance the requests across handlers. Add configs to enable balancing by read vs writes, etc.
* See below article for explanation of options.
* @see <a href="http://blog.cloudera.com/blog/2014/12/new-in-cdh-5-2-improvements-for-running-multiple-workloads-on-a-single-hbase-cluster/">Overview on Request Queuing</a>
*/
@InterfaceAudience.LimitedPrivate({HBaseInterfaceAudience.COPROC, HBaseInterfaceAudience.PHOENIX})
@InterfaceStability.Evolving
@ -49,7 +52,8 @@ public class SimpleRpcScheduler extends RpcScheduler implements ConfigurationObs
public static final String CALL_QUEUE_HANDLER_FACTOR_CONF_KEY =
"hbase.ipc.server.callqueue.handler.factor";
/** If set to 'deadline', uses a priority queue and deprioritize long-running scans */
/** If set to 'deadline', the default, uses a priority queue and deprioritizes long-running scans
*/
public static final String CALL_QUEUE_TYPE_CONF_KEY = "hbase.ipc.server.callqueue.type";
public static final String CALL_QUEUE_TYPE_CODEL_CONF_VALUE = "codel";
public static final String CALL_QUEUE_TYPE_DEADLINE_CONF_VALUE = "deadline";
@ -190,54 +194,58 @@ public class SimpleRpcScheduler extends RpcScheduler implements ConfigurationObs
float callQueuesHandlersFactor = conf.getFloat(CALL_QUEUE_HANDLER_FACTOR_CONF_KEY, 0);
int numCallQueues = Math.max(1, (int)Math.round(handlerCount * callQueuesHandlersFactor));
LOG.info("Using " + callQueueType + " as user call queue, count=" + numCallQueues);
LOG.info("Using " + callQueueType + " as user call queue; numCallQueues=" + numCallQueues +
"; callQReadShare=" + callqReadShare + ", callQScanShare=" + callqScanShare);
if (numCallQueues > 1 && callqReadShare > 0) {
// multiple read/write queues
if (callQueueType.equals(CALL_QUEUE_TYPE_DEADLINE_CONF_VALUE)) {
if (isDeadlineQueueType(callQueueType)) {
CallPriorityComparator callPriority = new CallPriorityComparator(conf, this.priority);
callExecutor = new RWQueueRpcExecutor("RW.default", handlerCount, numCallQueues,
callExecutor = new RWQueueRpcExecutor("RWQ.default", handlerCount, numCallQueues,
callqReadShare, callqScanShare, maxQueueLength, conf, abortable,
BoundedPriorityBlockingQueue.class, callPriority);
} else if (callQueueType.equals(CALL_QUEUE_TYPE_CODEL_CONF_VALUE)) {
Object[] callQueueInitArgs = {maxQueueLength, codelTargetDelay, codelInterval,
codelLifoThreshold, numGeneralCallsDropped, numLifoModeSwitches};
callExecutor = new RWQueueRpcExecutor("RW.default", handlerCount,
callExecutor = new RWQueueRpcExecutor("RWQ.default", handlerCount,
numCallQueues, callqReadShare, callqScanShare,
AdaptiveLifoCoDelCallQueue.class, callQueueInitArgs,
AdaptiveLifoCoDelCallQueue.class, callQueueInitArgs);
} else {
callExecutor = new RWQueueRpcExecutor("RW.default", handlerCount, numCallQueues,
callExecutor = new RWQueueRpcExecutor("RWQ.default", handlerCount, numCallQueues,
callqReadShare, callqScanShare, maxQueueLength, conf, abortable);
}
} else {
// multiple queues
if (callQueueType.equals(CALL_QUEUE_TYPE_DEADLINE_CONF_VALUE)) {
if (isDeadlineQueueType(callQueueType)) {
CallPriorityComparator callPriority = new CallPriorityComparator(conf, this.priority);
callExecutor = new BalancedQueueRpcExecutor("B.default", handlerCount, numCallQueues,
conf, abortable, BoundedPriorityBlockingQueue.class, maxQueueLength, callPriority);
callExecutor =
new BalancedQueueRpcExecutor("BalancedQ.default", handlerCount, numCallQueues,
conf, abortable, BoundedPriorityBlockingQueue.class, maxQueueLength, callPriority);
} else if (callQueueType.equals(CALL_QUEUE_TYPE_CODEL_CONF_VALUE)) {
callExecutor = new BalancedQueueRpcExecutor("B.default", handlerCount, numCallQueues,
conf, abortable, AdaptiveLifoCoDelCallQueue.class, maxQueueLength,
codelTargetDelay, codelInterval, codelLifoThreshold,
numGeneralCallsDropped, numLifoModeSwitches);
callExecutor =
new BalancedQueueRpcExecutor("BalancedQ.default", handlerCount, numCallQueues,
conf, abortable, AdaptiveLifoCoDelCallQueue.class, maxQueueLength,
codelTargetDelay, codelInterval, codelLifoThreshold,
numGeneralCallsDropped, numLifoModeSwitches);
} else {
callExecutor = new BalancedQueueRpcExecutor("B.default", handlerCount,
callExecutor = new BalancedQueueRpcExecutor("BalancedQ.default", handlerCount,
numCallQueues, maxQueueLength, conf, abortable);
}
}
// Create 2 queues to help priorityExecutor be more scalable.
this.priorityExecutor = priorityHandlerCount > 0 ?
new BalancedQueueRpcExecutor("Priority", priorityHandlerCount, 2, maxPriorityQueueLength) :
null;
new BalancedQueueRpcExecutor("BalancedQ.priority", priorityHandlerCount, 2,
maxPriorityQueueLength):
null;
this.replicationExecutor =
replicationHandlerCount > 0 ? new BalancedQueueRpcExecutor("Replication",
replicationHandlerCount > 0 ? new BalancedQueueRpcExecutor("BalancedQ.replication",
replicationHandlerCount, 1, maxQueueLength, conf, abortable) : null;
}
private static boolean isDeadlineQueueType(final String callQueueType) {
return callQueueType.equals(CALL_QUEUE_TYPE_DEADLINE_CONF_VALUE);
}
public SimpleRpcScheduler(
Configuration conf,
int handlerCount,

47
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/FifoRpcSchedulerFactory.java Normal file
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@ -0,0 +1,47 @@
/**
* 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.regionserver;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Abortable;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.hbase.ipc.FifoRpcScheduler;
import org.apache.hadoop.hbase.ipc.PriorityFunction;
import org.apache.hadoop.hbase.ipc.RpcScheduler;
/**
* Factory to use when you want to use the {@link FifoRpcScheduler}
*/
@InterfaceAudience.Private
@InterfaceStability.Evolving
public class FifoRpcSchedulerFactory implements RpcSchedulerFactory {
@Override
public RpcScheduler create(Configuration conf, PriorityFunction priority, Abortable server) {
int handlerCount = conf.getInt(HConstants.REGION_SERVER_HANDLER_COUNT,
HConstants.DEFAULT_REGION_SERVER_HANDLER_COUNT);
return new FifoRpcScheduler(conf, handlerCount);
}
@Deprecated
@Override
public RpcScheduler create(Configuration conf, PriorityFunction priority) {
return create(conf, priority, null);
}
}

2
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RpcSchedulerFactory.java
View File

@ -31,7 +31,6 @@ import org.apache.hadoop.hbase.ipc.RpcScheduler;
@InterfaceAudience.LimitedPrivate({HBaseInterfaceAudience.COPROC, HBaseInterfaceAudience.PHOENIX})
@InterfaceStability.Evolving
public interface RpcSchedulerFactory {
/**
* Constructs a {@link org.apache.hadoop.hbase.ipc.RpcScheduler}.
*/
@ -39,5 +38,4 @@ public interface RpcSchedulerFactory {
@Deprecated
RpcScheduler create(Configuration conf, PriorityFunction priority);
}

6
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/SimpleRpcSchedulerFactory.java
View File

@ -27,11 +27,11 @@ import org.apache.hadoop.hbase.ipc.PriorityFunction;
import org.apache.hadoop.hbase.ipc.RpcScheduler;
import org.apache.hadoop.hbase.ipc.SimpleRpcScheduler;
/** Constructs a {@link SimpleRpcScheduler}. */
/** Constructs a {@link SimpleRpcScheduler}.
*/
@InterfaceAudience.LimitedPrivate({HBaseInterfaceAudience.COPROC, HBaseInterfaceAudience.PHOENIX})
@InterfaceStability.Evolving
public class SimpleRpcSchedulerFactory implements RpcSchedulerFactory {
@Override
@Deprecated
public RpcScheduler create(Configuration conf, PriorityFunction priority) {
@ -42,7 +42,6 @@ public class SimpleRpcSchedulerFactory implements RpcSchedulerFactory {
public RpcScheduler create(Configuration conf, PriorityFunction priority, Abortable server) {
int handlerCount = conf.getInt(HConstants.REGION_SERVER_HANDLER_COUNT,
HConstants.DEFAULT_REGION_SERVER_HANDLER_COUNT);
return new SimpleRpcScheduler(
conf,
handlerCount,
@ -54,5 +53,4 @@ public class SimpleRpcSchedulerFactory implements RpcSchedulerFactory {
server,
HConstants.QOS_THRESHOLD);
}
}

71
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRpcSchedulerFactory.java Normal file
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@ -0,0 +1,71 @@
/**
* 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.regionserver;
import static org.junit.Assert.assertTrue;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.CategoryBasedTimeout;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.ipc.FifoRpcScheduler;
import org.apache.hadoop.hbase.ipc.RpcScheduler;
import org.apache.hadoop.hbase.ipc.SimpleRpcScheduler;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.Before;
import org.junit.ClassRule;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.TestName;
import org.junit.rules.TestRule;
/**
* A silly test that does nothing but make sure an rpcscheduler factory makes what it says
* it is going to make.
*/
@Category(SmallTests.class)
public class TestRpcSchedulerFactory {
@Rule public TestName testName = new TestName();
@ClassRule public static TestRule timeout =
CategoryBasedTimeout.forClass(TestRpcSchedulerFactory.class);
private Configuration conf;
@Before
public void setUp() throws Exception {
this.conf = HBaseConfiguration.create();
}
@Test
public void testRWQ() {
// Set some configs just to see how it changes the scheduler. Can't assert the settings had
// an effect. Just eyeball the log.
this.conf.setDouble(SimpleRpcScheduler.CALL_QUEUE_READ_SHARE_CONF_KEY, 0.5);
this.conf.setDouble(SimpleRpcScheduler.CALL_QUEUE_HANDLER_FACTOR_CONF_KEY, 0.5);
this.conf.setDouble(SimpleRpcScheduler.CALL_QUEUE_SCAN_SHARE_CONF_KEY, 0.5);
RpcSchedulerFactory factory = new SimpleRpcSchedulerFactory();
RpcScheduler rpcScheduler = factory.create(this.conf, null, null);
assertTrue(rpcScheduler.getClass().equals(SimpleRpcScheduler.class));
}
@Test
public void testFifo() {
RpcSchedulerFactory factory = new FifoRpcSchedulerFactory();
RpcScheduler rpcScheduler = factory.create(this.conf, null, null);
assertTrue(rpcScheduler.getClass().equals(FifoRpcScheduler.class));
}
}