HDFS-5406. Merge r1551093 and r1551110 from trunk to branch-2

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1556084 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Arpit Agarwal 2014-01-07 00:29:44 +00:00
parent fe95f9a81f
commit a7417a0af9
6 changed files with 380 additions and 61 deletions

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@ -22,6 +22,7 @@
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.SocketTimeoutException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Map;
@ -270,7 +271,8 @@ void reportBadBlocks(ExtendedBlock block,
private void reportReceivedDeletedBlocks() throws IOException {
// Generate a list of the pending reports for each storage under the lock
Map<String, ReceivedDeletedBlockInfo[]> blockArrays = Maps.newHashMap();
ArrayList<StorageReceivedDeletedBlocks> reports =
new ArrayList<StorageReceivedDeletedBlocks>(pendingIncrementalBRperStorage.size());
synchronized (pendingIncrementalBRperStorage) {
for (Map.Entry<String, PerStoragePendingIncrementalBR> entry :
pendingIncrementalBRperStorage.entrySet()) {
@ -283,33 +285,34 @@ private void reportReceivedDeletedBlocks() throws IOException {
pendingReceivedRequests =
(pendingReceivedRequests > rdbi.length ?
(pendingReceivedRequests - rdbi.length) : 0);
blockArrays.put(storageUuid, rdbi);
reports.add(new StorageReceivedDeletedBlocks(storageUuid, rdbi));
}
}
}
// Send incremental block reports to the Namenode outside the lock
for (Map.Entry<String, ReceivedDeletedBlockInfo[]> entry :
blockArrays.entrySet()) {
final String storageUuid = entry.getKey();
final ReceivedDeletedBlockInfo[] rdbi = entry.getValue();
if (reports.size() == 0) {
// Nothing new to report.
return;
}
StorageReceivedDeletedBlocks[] report = { new StorageReceivedDeletedBlocks(
storageUuid, rdbi) };
boolean success = false;
try {
bpNamenode.blockReceivedAndDeleted(bpRegistration,
bpos.getBlockPoolId(), report);
success = true;
} finally {
if (!success) {
synchronized (pendingIncrementalBRperStorage) {
// Send incremental block reports to the Namenode outside the lock
boolean success = false;
try {
bpNamenode.blockReceivedAndDeleted(bpRegistration,
bpos.getBlockPoolId(),
reports.toArray(new StorageReceivedDeletedBlocks[reports.size()]));
success = true;
} finally {
if (!success) {
synchronized (pendingIncrementalBRperStorage) {
for (StorageReceivedDeletedBlocks report : reports) {
// If we didn't succeed in sending the report, put all of the
// blocks back onto our queue, but only in the case where we
// didn't put something newer in the meantime.
PerStoragePendingIncrementalBR perStorageMap =
pendingIncrementalBRperStorage.get(storageUuid);
pendingReceivedRequests += perStorageMap.putMissingBlockInfos(rdbi);
pendingIncrementalBRperStorage.get(report.getStorageID());
pendingReceivedRequests +=
perStorageMap.putMissingBlockInfos(report.getBlocks());
}
}
}

View File

@ -983,6 +983,7 @@ public DatanodeCommand blockReport(DatanodeRegistration nodeReg,
public void blockReceivedAndDeleted(DatanodeRegistration nodeReg, String poolId,
StorageReceivedDeletedBlocks[] receivedAndDeletedBlocks) throws IOException {
verifyRequest(nodeReg);
metrics.incrBlockReceivedAndDeletedOps();
if(blockStateChangeLog.isDebugEnabled()) {
blockStateChangeLog.debug("*BLOCK* NameNode.blockReceivedAndDeleted: "
+"from "+nodeReg+" "+receivedAndDeletedBlocks.length

View File

@ -71,6 +71,8 @@ public class NameNodeMetrics {
MutableCounterLong listSnapshottableDirOps;
@Metric("Number of snapshotDiffReport operations")
MutableCounterLong snapshotDiffReportOps;
@Metric("Number of blockReceivedAndDeleted calls")
MutableCounterLong blockReceivedAndDeletedOps;
@Metric("Journal transactions") MutableRate transactions;
@Metric("Journal syncs") MutableRate syncs;
@ -210,6 +212,10 @@ public void incrSnapshotDiffReportOps() {
snapshotDiffReportOps.incr();
}
public void incrBlockReceivedAndDeletedOps() {
blockReceivedAndDeletedOps.incr();
}
public void addTransaction(long latency) {
transactions.add(latency);
}

View File

@ -2144,17 +2144,14 @@ public File getInstanceStorageDir(int dnIndex, int dirIndex) {
}
/**
* Get a storage directory for a datanode. There are two storage directories
* per datanode:
* Get a storage directory for a datanode.
* <ol>
* <li><base directory>/data/data<2*dnIndex + 1></li>
* <li><base directory>/data/data<2*dnIndex + 2></li>
* </ol>
*
* @param dnIndex datanode index (starts from 0)
* @param dirIndex directory index (0 or 1). Index 0 provides access to the
* first storage directory. Index 1 provides access to the second
* storage directory.
* @param dirIndex directory index.
* @return Storage directory
*/
public static File getStorageDir(int dnIndex, int dirIndex) {
@ -2165,7 +2162,7 @@ public static File getStorageDir(int dnIndex, int dirIndex) {
* Calculate the DN instance-specific path for appending to the base dir
* to determine the location of the storage of a DN instance in the mini cluster
* @param dnIndex datanode index
* @param dirIndex directory index (0 or 1).
* @param dirIndex directory index.
* @return
*/
private static String getStorageDirPath(int dnIndex, int dirIndex) {

View File

@ -71,7 +71,15 @@
/**
* This test simulates a variety of situations when blocks are being
* intentionally corrupted, unexpectedly modified, and so on before a block
* report is happening
* report is happening.
*
* For each test case it runs two variations:
* #1 - For a given DN, the first variation sends block reports for all
* storages in a single call to the NN.
* #2 - For a given DN, the second variation sends block reports for each
* storage in a separate call.
*
* The behavior should be the same in either variation.
*/
public class TestBlockReport {
public static final Log LOG = LogFactory.getLog(TestBlockReport.class);
@ -157,6 +165,113 @@ private static StorageBlockReport[] getBlockReports(
return reports;
}
/**
* Utility routine to send block reports to the NN, either in a single call
* or reporting one storage per call.
*
* @param dnR
* @param poolId
* @param reports
* @param needtoSplit
* @throws IOException
*/
private void sendBlockReports(DatanodeRegistration dnR, String poolId,
StorageBlockReport[] reports, boolean needtoSplit) throws IOException {
if (!needtoSplit) {
LOG.info("Sending combined block reports for " + dnR);
cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
} else {
for (StorageBlockReport report : reports) {
LOG.info("Sending block report for storage " + report.getStorage().getStorageID());
StorageBlockReport[] singletonReport = { report };
cluster.getNameNodeRpc().blockReport(dnR, poolId, singletonReport);
}
}
}
/**
* Test variations blockReport_01 through blockReport_09 with combined
* and split block reports.
*/
@Test
public void blockReportCombined_01() throws IOException {
blockReport_01(false);
}
@Test
public void blockReportSplit_01() throws IOException {
blockReport_01(true);
}
@Test
public void blockReportCombined_02() throws IOException {
blockReport_02(false);
}
@Test
public void blockReportSplit_02() throws IOException {
blockReport_02(true);
}
@Test
public void blockReportCombined_03() throws IOException {
blockReport_03(false);
}
@Test
public void blockReportSplit_03() throws IOException {
blockReport_03(true);
}
@Test
public void blockReportCombined_04() throws IOException {
blockReport_04(false);
}
@Test
public void blockReportSplit_04() throws IOException {
blockReport_04(true);
}
@Test
public void blockReportCombined_06() throws Exception {
blockReport_06(false);
}
@Test
public void blockReportSplit_06() throws Exception {
blockReport_06(true);
}
@Test
public void blockReportCombined_07() throws Exception {
blockReport_07(false);
}
@Test
public void blockReportSplit_07() throws Exception {
blockReport_07(true);
}
@Test
public void blockReportCombined_08() throws Exception {
blockReport_08(false);
}
@Test
public void blockReportSplit_08() throws Exception {
blockReport_08(true);
}
@Test
public void blockReportCombined_09() throws Exception {
blockReport_09(false);
}
@Test
public void blockReportSplit_09() throws Exception {
blockReport_09(true);
}
/**
* Test write a file, verifies and closes it. Then the length of the blocks
* are messed up and BlockReport is forced.
@ -164,8 +279,7 @@ private static StorageBlockReport[] getBlockReports(
*
* @throws java.io.IOException on an error
*/
@Test
public void blockReport_01() throws IOException {
private void blockReport_01(boolean splitBlockReports) throws IOException {
final String METHOD_NAME = GenericTestUtils.getMethodName();
Path filePath = new Path("/" + METHOD_NAME + ".dat");
@ -198,7 +312,7 @@ public void blockReport_01() throws IOException {
String poolId = cluster.getNamesystem().getBlockPoolId();
DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
StorageBlockReport[] reports = getBlockReports(dn, poolId, false, false);
cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
sendBlockReports(dnR, poolId, reports, splitBlockReports);
List<LocatedBlock> blocksAfterReport =
DFSTestUtil.getAllBlocks(fs.open(filePath));
@ -224,8 +338,7 @@ public void blockReport_01() throws IOException {
*
* @throws IOException in case of errors
*/
@Test
public void blockReport_02() throws IOException {
private void blockReport_02(boolean splitBlockReports) throws IOException {
final String METHOD_NAME = GenericTestUtils.getMethodName();
LOG.info("Running test " + METHOD_NAME);
@ -280,7 +393,7 @@ public void blockReport_02() throws IOException {
String poolId = cluster.getNamesystem().getBlockPoolId();
DatanodeRegistration dnR = dn0.getDNRegistrationForBP(poolId);
StorageBlockReport[] reports = getBlockReports(dn0, poolId, false, false);
cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
sendBlockReports(dnR, poolId, reports, splitBlockReports);
BlockManagerTestUtil.getComputedDatanodeWork(cluster.getNamesystem()
.getBlockManager());
@ -301,8 +414,7 @@ public void blockReport_02() throws IOException {
*
* @throws IOException in case of an error
*/
@Test
public void blockReport_03() throws IOException {
private void blockReport_03(boolean splitBlockReports) throws IOException {
final String METHOD_NAME = GenericTestUtils.getMethodName();
Path filePath = new Path("/" + METHOD_NAME + ".dat");
ArrayList<Block> blocks = writeFile(METHOD_NAME, FILE_SIZE, filePath);
@ -312,11 +424,7 @@ public void blockReport_03() throws IOException {
String poolId = cluster.getNamesystem().getBlockPoolId();
DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
StorageBlockReport[] reports = getBlockReports(dn, poolId, true, false);
DatanodeCommand dnCmd =
cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
if(LOG.isDebugEnabled()) {
LOG.debug("Got the command: " + dnCmd);
}
sendBlockReports(dnR, poolId, reports, splitBlockReports);
printStats();
assertThat("Wrong number of corrupt blocks",
@ -333,8 +441,7 @@ public void blockReport_03() throws IOException {
*
* @throws IOException in case of an error
*/
@Test
public void blockReport_04() throws IOException {
private void blockReport_04(boolean splitBlockReports) throws IOException {
final String METHOD_NAME = GenericTestUtils.getMethodName();
Path filePath = new Path("/" + METHOD_NAME + ".dat");
DFSTestUtil.createFile(fs, filePath,
@ -352,11 +459,7 @@ public void blockReport_04() throws IOException {
DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
StorageBlockReport[] reports = getBlockReports(dn, poolId, false, false);
DatanodeCommand dnCmd =
cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
if(LOG.isDebugEnabled()) {
LOG.debug("Got the command: " + dnCmd);
}
sendBlockReports(dnR, poolId, reports, splitBlockReports);
printStats();
assertThat("Wrong number of corrupt blocks",
@ -373,8 +476,7 @@ public void blockReport_04() throws IOException {
*
* @throws IOException in case of an error
*/
@Test
public void blockReport_06() throws Exception {
private void blockReport_06(boolean splitBlockReports) throws Exception {
final String METHOD_NAME = GenericTestUtils.getMethodName();
Path filePath = new Path("/" + METHOD_NAME + ".dat");
final int DN_N1 = DN_N0 + 1;
@ -387,7 +489,7 @@ public void blockReport_06() throws Exception {
String poolId = cluster.getNamesystem().getBlockPoolId();
DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
StorageBlockReport[] reports = getBlockReports(dn, poolId, false, false);
cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
sendBlockReports(dnR, poolId, reports, splitBlockReports);
printStats();
assertEquals("Wrong number of PendingReplication Blocks",
0, cluster.getNamesystem().getUnderReplicatedBlocks());
@ -406,8 +508,7 @@ public void blockReport_06() throws Exception {
*
* @throws IOException in case of an error
*/
@Test
public void blockReport_07() throws Exception {
private void blockReport_07(boolean splitBlockReports) throws Exception {
final String METHOD_NAME = GenericTestUtils.getMethodName();
Path filePath = new Path("/" + METHOD_NAME + ".dat");
final int DN_N1 = DN_N0 + 1;
@ -421,7 +522,7 @@ public void blockReport_07() throws Exception {
String poolId = cluster.getNamesystem().getBlockPoolId();
DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
StorageBlockReport[] reports = getBlockReports(dn, poolId, true, false);
cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
sendBlockReports(dnR, poolId, reports, splitBlockReports);
printStats();
assertThat("Wrong number of corrupt blocks",
@ -432,7 +533,7 @@ public void blockReport_07() throws Exception {
cluster.getNamesystem().getPendingReplicationBlocks(), is(0L));
reports = getBlockReports(dn, poolId, true, true);
cluster.getNameNodeRpc().blockReport(dnR, poolId, reports);
sendBlockReports(dnR, poolId, reports, splitBlockReports);
printStats();
assertThat("Wrong number of corrupt blocks",
@ -458,8 +559,7 @@ public void blockReport_07() throws Exception {
*
* @throws IOException in case of an error
*/
@Test
public void blockReport_08() throws IOException {
private void blockReport_08(boolean splitBlockReports) throws IOException {
final String METHOD_NAME = GenericTestUtils.getMethodName();
Path filePath = new Path("/" + METHOD_NAME + ".dat");
final int DN_N1 = DN_N0 + 1;
@ -483,8 +583,8 @@ public void blockReport_08() throws IOException {
DataNode dn = cluster.getDataNodes().get(DN_N1);
String poolId = cluster.getNamesystem().getBlockPoolId();
DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
StorageBlockReport[] report = getBlockReports(dn, poolId, false, false);
cluster.getNameNodeRpc().blockReport(dnR, poolId, report);
StorageBlockReport[] reports = getBlockReports(dn, poolId, false, false);
sendBlockReports(dnR, poolId, reports, splitBlockReports);
printStats();
assertEquals("Wrong number of PendingReplication blocks",
blocks.size(), cluster.getNamesystem().getPendingReplicationBlocks());
@ -500,8 +600,7 @@ public void blockReport_08() throws IOException {
// Similar to BlockReport_08 but corrupts GS and len of the TEMPORARY's
// replica block. Expect the same behaviour: NN should simply ignore this
// block
@Test
public void blockReport_09() throws IOException {
private void blockReport_09(boolean splitBlockReports) throws IOException {
final String METHOD_NAME = GenericTestUtils.getMethodName();
Path filePath = new Path("/" + METHOD_NAME + ".dat");
final int DN_N1 = DN_N0 + 1;
@ -526,8 +625,8 @@ public void blockReport_09() throws IOException {
DataNode dn = cluster.getDataNodes().get(DN_N1);
String poolId = cluster.getNamesystem().getBlockPoolId();
DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
StorageBlockReport[] report = getBlockReports(dn, poolId, true, true);
cluster.getNameNodeRpc().blockReport(dnR, poolId, report);
StorageBlockReport[] reports = getBlockReports(dn, poolId, true, true);
sendBlockReports(dnR, poolId, reports, splitBlockReports);
printStats();
assertEquals("Wrong number of PendingReplication blocks",
2, cluster.getNamesystem().getPendingReplicationBlocks());

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@ -0,0 +1,213 @@
/**
* 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.hdfs.server.datanode;
import static org.apache.hadoop.test.MetricsAsserts.assertCounter;
import static org.apache.hadoop.test.MetricsAsserts.getLongCounter;
import static org.apache.hadoop.test.MetricsAsserts.getMetrics;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.net.InetSocketAddress;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.impl.Log4JLogger;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DFSClient;
import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.protocol.*;
import org.apache.hadoop.hdfs.server.blockmanagement.BlockManager;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
import org.apache.hadoop.hdfs.server.namenode.NameNode;
import org.apache.hadoop.hdfs.server.protocol.*;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.log4j.Level;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
/**
* This test verifies that incremental block reports from a single DataNode are
* correctly handled by NN. Tests the following variations:
* #1 - Incremental BRs from all storages combined in a single call.
* #2 - Incremental BRs from separate storages sent in separate calls.
*
* We also verify that the DataNode is not splitting the reports (it may do so
* in the future).
*/
public class TestIncrementalBrVariations {
public static final Log LOG = LogFactory.getLog(TestIncrementalBrVariations.class);
private static short NUM_DATANODES = 1;
static final int BLOCK_SIZE = 1024;
static final int NUM_BLOCKS = 10;
private static final long seed = 0xFACEFEEDL;
private static final String NN_METRICS = "NameNodeActivity";
private MiniDFSCluster cluster;
private DistributedFileSystem fs;
private DFSClient client;
private static Configuration conf;
static {
((Log4JLogger) NameNode.stateChangeLog).getLogger().setLevel(Level.ALL);
((Log4JLogger) BlockManager.blockLog).getLogger().setLevel(Level.ALL);
((Log4JLogger) NameNode.blockStateChangeLog).getLogger().setLevel(Level.ALL);
((Log4JLogger) LogFactory.getLog(FSNamesystem.class)).getLogger().setLevel(Level.ALL);
((Log4JLogger) DataNode.LOG).getLogger().setLevel(Level.ALL);
((Log4JLogger) TestIncrementalBrVariations.LOG).getLogger().setLevel(Level.ALL);
}
@Before
public void startUpCluster() throws IOException {
conf = new Configuration();
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(NUM_DATANODES).build();
fs = cluster.getFileSystem();
client = new DFSClient(new InetSocketAddress("localhost", cluster.getNameNodePort()),
cluster.getConfiguration(0));
}
@After
public void shutDownCluster() throws IOException {
client.close();
fs.close();
cluster.shutdownDataNodes();
cluster.shutdown();
}
/**
* Incremental BRs from all storages combined in a single message.
*/
@Test
public void testCombinedIncrementalBlockReport() throws IOException {
verifyIncrementalBlockReports(false);
}
/**
* One incremental BR per storage.
*/
@Test
public void testSplitIncrementalBlockReport() throws IOException {
verifyIncrementalBlockReports(true);
}
private LocatedBlocks createFileGetBlocks(String filenamePrefix) throws IOException {
Path filePath = new Path("/" + filenamePrefix + ".dat");
// Write out a file with a few blocks, get block locations.
DFSTestUtil.createFile(fs, filePath, BLOCK_SIZE, BLOCK_SIZE * NUM_BLOCKS,
BLOCK_SIZE, NUM_DATANODES, seed);
// Get the block list for the file with the block locations.
LocatedBlocks blocks = client.getLocatedBlocks(
filePath.toString(), 0, BLOCK_SIZE * NUM_BLOCKS);
assertThat(cluster.getNamesystem().getUnderReplicatedBlocks(), is(0L));
return blocks;
}
public void verifyIncrementalBlockReports(boolean splitReports) throws IOException {
// Get the block list for the file with the block locations.
LocatedBlocks blocks = createFileGetBlocks(GenericTestUtils.getMethodName());
// A blocks belong to the same file, hence same BP
DataNode dn = cluster.getDataNodes().get(0);
String poolId = cluster.getNamesystem().getBlockPoolId();
DatanodeRegistration dnR = dn.getDNRegistrationForBP(poolId);
// We will send 'fake' incremental block reports to the NN that look
// like they originated from DN 0.
StorageReceivedDeletedBlocks reports[] =
new StorageReceivedDeletedBlocks[dn.getFSDataset().getVolumes().size()];
// Lie to the NN that one block on each storage has been deleted.
for (int i = 0; i < reports.length; ++i) {
FsVolumeSpi volume = dn.getFSDataset().getVolumes().get(i);
boolean foundBlockOnStorage = false;
ReceivedDeletedBlockInfo rdbi[] = new ReceivedDeletedBlockInfo[1];
// Find the first block on this storage and mark it as deleted for the
// report.
for (LocatedBlock block : blocks.getLocatedBlocks()) {
if (block.getStorageIDs()[0].equals(volume.getStorageID())) {
rdbi[0] = new ReceivedDeletedBlockInfo(block.getBlock().getLocalBlock(),
ReceivedDeletedBlockInfo.BlockStatus.DELETED_BLOCK, null);
foundBlockOnStorage = true;
break;
}
}
assertTrue(foundBlockOnStorage);
reports[i] = new StorageReceivedDeletedBlocks(volume.getStorageID(), rdbi);
if (splitReports) {
// If we are splitting reports then send the report for this storage now.
StorageReceivedDeletedBlocks singletonReport[] = { reports[i] };
cluster.getNameNodeRpc().blockReceivedAndDeleted(dnR, poolId, singletonReport);
}
}
if (!splitReports) {
// Send a combined report.
cluster.getNameNodeRpc().blockReceivedAndDeleted(dnR, poolId, reports);
}
// Make sure that the deleted block from each storage was picked up
// by the NameNode.
assertThat(cluster.getNamesystem().getMissingBlocksCount(), is((long) reports.length));
}
/**
* Verify that the DataNode sends a single incremental block report for all
* storages.
* @throws IOException
* @throws InterruptedException
*/
@Test (timeout=60000)
public void testDataNodeDoesNotSplitReports()
throws IOException, InterruptedException {
LocatedBlocks blocks = createFileGetBlocks(GenericTestUtils.getMethodName());
assertThat(cluster.getDataNodes().size(), is(1));
DataNode dn = cluster.getDataNodes().get(0);
// Remove all blocks from the DataNode.
for (LocatedBlock block : blocks.getLocatedBlocks()) {
dn.notifyNamenodeDeletedBlock(
block.getBlock(), block.getStorageIDs()[0]);
}
LOG.info("Triggering report after deleting blocks");
long ops = getLongCounter("BlockReceivedAndDeletedOps", getMetrics(NN_METRICS));
// Trigger a report to the NameNode and give it a few seconds.
DataNodeTestUtils.triggerBlockReport(dn);
Thread.sleep(5000);
// Ensure that NameNodeRpcServer.blockReceivedAndDeletes is invoked
// exactly once after we triggered the report.
assertCounter("BlockReceivedAndDeletedOps", ops+1, getMetrics(NN_METRICS));
}
}