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HBASE-10616. Integration test for multi-get calls 

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/hbase-10070@1577372 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Devaraj Das 2014-03-13 23:22:33 +00:00 committed by Enis Soztutar
parent a0a4744556
commit 41116848e5
5 changed files with 204 additions and 50 deletions
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75
hbase-it/src/test/java/org/apache/hadoop/hbase/test/IntegrationTestTimeBoundedMultiGetRequestsWithRegionReplicas.java Normal file
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@ -0,0 +1,75 @@
/**
* 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.test;
import java.util.List;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.IntegrationTestingUtility;
import org.apache.hadoop.hbase.IntegrationTests;
import org.apache.hadoop.hbase.util.LoadTestTool;
import org.apache.hadoop.hbase.util.MultiThreadedReader;
import org.apache.hadoop.util.ToolRunner;
import org.junit.experimental.categories.Category;
import com.google.common.collect.Lists;
/**
* Extends {@link IntegrationTestTimeBoundedRequestsWithRegionReplicas} for multi-gets
* Besides the options already talked about in IntegrationTestTimeBoundedRequestsWithRegionReplicas
* the addition options here are:
* <pre>
* -DIntegrationTestTimeBoundedMultiGetRequestsWithRegionReplicas.multiget_batchsize=100
* -DIntegrationTestTimeBoundedMultiGetRequestsWithRegionReplicas.num_regions_per_server=5
* </pre>
* The multiget_batchsize when set to 1 will issue normal GETs.
* The num_regions_per_server argument indirectly impacts the region size (for a given number of
* num_keys_per_server). That in conjunction with multiget_batchsize would have different behaviors
* - the batch of gets goes to the same region or to multiple regions.
*/
@Category(IntegrationTests.class)
public class IntegrationTestTimeBoundedMultiGetRequestsWithRegionReplicas
extends IntegrationTestTimeBoundedRequestsWithRegionReplicas {
@Override
protected String[] getArgsForLoadTestTool(String mode, String modeSpecificArg, long startKey,
long numKeys) {
List<String> args = Lists.newArrayList(super.getArgsForLoadTestTool(
mode, modeSpecificArg, startKey, numKeys));
String clazz = this.getClass().getSimpleName();
args.add("-" + LoadTestTool.OPT_MULTIGET);
args.add(conf.get(String.format("%s.%s", clazz, LoadTestTool.OPT_MULTIGET),
Integer.toString(MultiThreadedReader.DEFAULT_BATCH_SIZE)));
args.add("-" + LoadTestTool.OPT_NUM_REGIONS_PER_SERVER);
args.add(conf.get(String.format("%s.%s", clazz, LoadTestTool.OPT_NUM_REGIONS_PER_SERVER),
Integer.toString(LoadTestTool.DEFAULT_NUM_REGIONS_PER_SERVER)));
return args.toArray(new String[args.size()]);
}
public static void main(String args[]) throws Exception {
Configuration conf = HBaseConfiguration.create();
IntegrationTestingUtility.setUseDistributedCluster(conf);
int ret = ToolRunner.run(conf,
new IntegrationTestTimeBoundedMultiGetRequestsWithRegionReplicas(), args);
System.exit(ret);
}
}

7
hbase-it/src/test/java/org/apache/hadoop/hbase/test/IntegrationTestTimeBoundedRequestsWithRegionReplicas.java
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@ -323,9 +323,10 @@ public class IntegrationTestTimeBoundedRequestsWithRegionReplicas extends Integr
}
@Override
protected void verifyResultsAndUpdateMetrics(boolean verify, String rowKey, long elapsedNano,
Result result, HTable table, boolean isNullExpected) throws IOException {
super.verifyResultsAndUpdateMetrics(verify, rowKey, elapsedNano, result, table, isNullExpected);
protected void verifyResultsAndUpdateMetrics(boolean verify, Get[] gets, long elapsedNano,
Result[] results, HTable table, boolean isNullExpected)
throws IOException {
super.verifyResultsAndUpdateMetrics(verify, gets, elapsedNano, results, table, isNullExpected);
// we actually do not timeout and cancel the reads after timeout. We just wait for the RPC
// to complete, but if the request took longer than timeout, we treat that as error.
if (elapsedNano > timeoutNano) {

13
hbase-server/src/test/java/org/apache/hadoop/hbase/util/LoadTestTool.java
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@ -133,6 +133,7 @@ public class LoadTestTool extends AbstractHBaseTool {
protected static final String OPT_WRITE = "write";
protected static final String OPT_MAX_READ_ERRORS = "max_read_errors";
protected static final String OPT_MULTIPUT = "multiput";
public static final String OPT_MULTIGET = "multiget_batchsize";
protected static final String OPT_NUM_KEYS = "num_keys";
protected static final String OPT_READ = "read";
protected static final String OPT_START_KEY = "start_key";
@ -154,7 +155,7 @@ public class LoadTestTool extends AbstractHBaseTool {
public static final String OPT_NUM_REGIONS_PER_SERVER = "num_regions_per_server";
protected static final String OPT_NUM_REGIONS_PER_SERVER_USAGE
= "Desired number of regions per region server. Defaults to 5.";
protected static int DEFAULT_NUM_REGIONS_PER_SERVER = 5;
public static int DEFAULT_NUM_REGIONS_PER_SERVER = 5;
public static final String OPT_REGION_REPLICATION = "region_replication";
protected static final String OPT_REGION_REPLICATION_USAGE =
@ -196,6 +197,7 @@ public class LoadTestTool extends AbstractHBaseTool {
// Reader options
private int numReaderThreads = DEFAULT_NUM_THREADS;
private int keyWindow = MultiThreadedReader.DEFAULT_KEY_WINDOW;
private int multiGetBatchSize = MultiThreadedReader.DEFAULT_BATCH_SIZE;
private int maxReadErrors = MultiThreadedReader.DEFAULT_MAX_ERRORS;
private int verifyPercent;
@ -298,6 +300,8 @@ public class LoadTestTool extends AbstractHBaseTool {
addOptWithArg(OPT_MAX_READ_ERRORS, "The maximum number of read errors " +
"to tolerate before terminating all reader threads. The default is " +
MultiThreadedReader.DEFAULT_MAX_ERRORS + ".");
addOptWithArg(OPT_MULTIGET, "Whether to use multi-gets as opposed to " +
"separate gets for every column in a row");
addOptWithArg(OPT_KEY_WINDOW, "The 'key window' to maintain between " +
"reads and writes for concurrent write/read workload. The default " +
"is " + MultiThreadedReader.DEFAULT_KEY_WINDOW + ".");
@ -432,6 +436,12 @@ public class LoadTestTool extends AbstractHBaseTool {
0, Integer.MAX_VALUE);
}
if (cmd.hasOption(OPT_MULTIGET)) {
multiGetBatchSize = parseInt(cmd.getOptionValue(OPT_MULTIGET),
0, Integer.MAX_VALUE);
}
System.out.println("Multi-gets (value of 1 means no multigets): " + multiGetBatchSize);
System.out.println("Percent of keys to verify: " + verifyPercent);
System.out.println("Reader threads: " + numReaderThreads);
}
@ -620,6 +630,7 @@ public class LoadTestTool extends AbstractHBaseTool {
}
readerThreads.setMaxErrors(maxReadErrors);
readerThreads.setKeyWindow(keyWindow);
readerThreads.setMultiGetBatchSize(multiGetBatchSize);
}
if (isUpdate && isWrite) {

113
hbase-server/src/test/java/org/apache/hadoop/hbase/util/MultiThreadedReader.java
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@ -17,6 +17,7 @@
package org.apache.hadoop.hbase.util;
import java.io.IOException;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.atomic.AtomicLong;
@ -64,13 +65,18 @@ public class MultiThreadedReader extends MultiThreadedAction
*/
public static final int DEFAULT_KEY_WINDOW = 0;
/**
* Default batch size for multigets
*/
public static final int DEFAULT_BATCH_SIZE = 1; //translates to simple GET (no multi GET)
protected AtomicLong numKeysVerified = new AtomicLong(0);
protected AtomicLong numReadErrors = new AtomicLong(0);
protected AtomicLong numReadFailures = new AtomicLong(0);
protected AtomicLong nullResult = new AtomicLong(0);
private int maxErrors = DEFAULT_MAX_ERRORS;
private int keyWindow = DEFAULT_KEY_WINDOW;
private int batchSize = DEFAULT_BATCH_SIZE;
public MultiThreadedReader(LoadTestDataGenerator dataGen, Configuration conf,
TableName tableName, double verifyPercent) {
@ -91,6 +97,10 @@ public class MultiThreadedReader extends MultiThreadedAction
this.keyWindow = keyWindow;
}
public void setMultiGetBatchSize(int batchSize) {
this.batchSize = batchSize;
}
@Override
public void start(long startKey, long endKey, int numThreads) throws IOException {
super.start(startKey, endKey, numThreads);
@ -169,28 +179,38 @@ public class MultiThreadedReader extends MultiThreadedAction
startTimeMs = System.currentTimeMillis();
curKey = startKey;
long [] keysForThisReader = new long[batchSize];
int readingRandomKeyStartIndex = -1;
while (curKey < endKey && !aborted) {
int numKeys = 0;
// if multiGet, loop until we have the number of keys equal to the batch size
do {
long k = getNextKeyToRead();
// A sanity check for the key range.
if (k < startKey || k >= endKey) {
numReadErrors.incrementAndGet();
throw new AssertionError("Load tester logic error: proposed key " +
"to read " + k + " is out of range (startKey=" + startKey +
", endKey=" + endKey + ")");
}
if (k % numThreads != readerId ||
writer != null && writer.failedToWriteKey(k)) {
// Skip keys that this thread should not read, as well as the keys
// that we know the writer failed to write.
continue;
}
keysForThisReader[numKeys] = k;
if (readingRandomKey && readingRandomKeyStartIndex == -1) {
//store the first index of a random read
readingRandomKeyStartIndex = numKeys;
}
numKeys++;
} while (numKeys < batchSize);
readKey(k);
if (k == curKey - 1 && !readingRandomKey) {
// We have verified another unique key.
numUniqueKeysVerified.incrementAndGet();
if (numKeys > 1) { //meaning there is some key to read
readKey(keysForThisReader);
// We have verified some unique key(s).
numUniqueKeysVerified.getAndAdd(readingRandomKeyStartIndex == -1 ?
numKeys : readingRandomKeyStartIndex);
}
}
}
@ -240,11 +260,16 @@ public class MultiThreadedReader extends MultiThreadedAction
% (maxKeyToRead - startKey + 1);
}
private Get readKey(long keyToRead) {
Get get = null;
private Get[] readKey(long[] keysToRead) {
Get [] gets = new Get[keysToRead.length];
int i = 0;
for (long keyToRead : keysToRead) {
try {
get = createGet(keyToRead);
queryKey(get, RandomUtils.nextInt(100) < verifyPercent, keyToRead);
gets[i] = createGet(keyToRead);
if (keysToRead.length == 1) {
queryKey(gets[i], RandomUtils.nextInt(100) < verifyPercent, keyToRead);
}
i++;
} catch (IOException e) {
numReadFailures.addAndGet(1);
LOG.debug("[" + readerId + "] FAILED read, key = " + (keyToRead + "")
@ -255,7 +280,24 @@ public class MultiThreadedReader extends MultiThreadedAction
printExceptionTrace = false;
}
}
return get;
}
if (keysToRead.length > 1) {
try {
queryKey(gets, RandomUtils.nextInt(100) < verifyPercent, keysToRead);
} catch (IOException e) {
numReadFailures.addAndGet(gets.length);
for (long keyToRead : keysToRead) {
LOG.debug("[" + readerId + "] FAILED read, key = " + (keyToRead + "")
+ ", time from start: "
+ (System.currentTimeMillis() - startTimeMs) + " ms");
}
if (printExceptionTrace) {
LOG.warn(e);
printExceptionTrace = false;
}
}
}
return gets;
}
protected Get createGet(long keyToRead) throws IOException {
@ -278,28 +320,53 @@ public class MultiThreadedReader extends MultiThreadedAction
return get;
}
public void queryKey(Get get, boolean verify, long keyToRead) throws IOException {
String rowKey = Bytes.toString(get.getRow());
public void queryKey(Get[] gets, boolean verify, long[] keysToRead) throws IOException {
// read the data
long start = System.nanoTime();
Result result = table.get(get);
// Uses multi/batch gets
Result[] results = table.get(Arrays.asList(gets));
long end = System.nanoTime();
verifyResultsAndUpdateMetrics(verify, rowKey, end - start, result, table, false);
verifyResultsAndUpdateMetrics(verify, gets, end - start, results, table, false);
}
protected void verifyResultsAndUpdateMetrics(boolean verify, String rowKey, long elapsedNano,
Result result, HTable table, boolean isNullExpected)
public void queryKey(Get get, boolean verify, long keyToRead) throws IOException {
// read the data
long start = System.nanoTime();
// Uses simple get
Result result = table.get(get);
long end = System.nanoTime();
verifyResultsAndUpdateMetrics(verify, get, end - start, result, table, false);
}
protected void verifyResultsAndUpdateMetrics(boolean verify, Get[] gets, long elapsedNano,
Result[] results, HTable table, boolean isNullExpected)
throws IOException {
totalOpTimeMs.addAndGet(elapsedNano / 1000000);
numKeys.addAndGet(1);
numKeys.addAndGet(gets.length);
int i = 0;
for (Result result : results) {
verifyResultsAndUpdateMetricsOnAPerGetBasis(verify, gets[i++], result, table,
isNullExpected);
}
}
protected void verifyResultsAndUpdateMetrics(boolean verify, Get get, long elapsedNano,
Result result, HTable table, boolean isNullExpected)
throws IOException {
verifyResultsAndUpdateMetrics(verify, new Get[]{get}, elapsedNano,
new Result[]{result}, table, isNullExpected);
}
private void verifyResultsAndUpdateMetricsOnAPerGetBasis(boolean verify, Get get,
Result result, HTable table, boolean isNullExpected) throws IOException {
if (!result.isEmpty()) {
if (verify) {
numKeysVerified.incrementAndGet();
}
} else {
HRegionLocation hloc = table.getRegionLocation(
Bytes.toBytes(rowKey));
HRegionLocation hloc = table.getRegionLocation(get.getRow());
String rowKey = Bytes.toString(get.getRow());
LOG.info("Key = " + rowKey + ", RegionServer: "
+ hloc.getHostname());
if(isNullExpected) {

2
hbase-server/src/test/java/org/apache/hadoop/hbase/util/MultiThreadedReaderWithACL.java
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@ -110,7 +110,7 @@ public class MultiThreadedReaderWithACL extends MultiThreadedReader {
boolean isNullExpected = ((((int) keyToRead % specialPermCellInsertionFactor)) == 0);
LOG.info("Read happening from ACL " + isNullExpected);
long end = System.nanoTime();
verifyResultsAndUpdateMetrics(verify, rowKey, end - start, result, localTable, isNullExpected);
verifyResultsAndUpdateMetrics(verify, get, end - start, result, localTable, isNullExpected);
} catch (IOException e) {
recordFailure(keyToRead);
}