Revert "HDFS-11576. Block recovery will fail indefinitely if recovery time > heartbeat interval. Contributed by Lukas Majercak"
This reverts commit 5304698dc8.
This commit is contained in:
Chris Douglas
parent
7225ec0ceb
commit
53bbef3802
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@ -641,16 +641,10 @@ public abstract class GenericTestUtils {
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* conditions.
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*/
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public static class SleepAnswer implements Answer<Object> {
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private final int minSleepTime;
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private final int maxSleepTime;
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private static Random r = new Random();
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public SleepAnswer(int maxSleepTime) {
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this(0, maxSleepTime);
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}
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public SleepAnswer(int minSleepTime, int maxSleepTime) {
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this.minSleepTime = minSleepTime;
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this.maxSleepTime = maxSleepTime;
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}
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@ -658,7 +652,7 @@ public abstract class GenericTestUtils {
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public Object answer(InvocationOnMock invocation) throws Throwable {
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boolean interrupted = false;
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try {
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Thread.sleep(r.nextInt(maxSleepTime) + minSleepTime);
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Thread.sleep(r.nextInt(maxSleepTime));
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} catch (InterruptedException ie) {
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interrupted = true;
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}
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@ -164,8 +164,6 @@ public class BlockManager implements BlockStatsMXBean {
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private static final String QUEUE_REASON_FUTURE_GENSTAMP =
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"generation stamp is in the future";
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private static final long BLOCK_RECOVERY_TIMEOUT_MULTIPLIER = 30;
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private final Namesystem namesystem;
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private final BlockManagerSafeMode bmSafeMode;
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@ -355,9 +353,6 @@ public class BlockManager implements BlockStatsMXBean {
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@VisibleForTesting
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final PendingReconstructionBlocks pendingReconstruction;
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/** Stores information about block recovery attempts. */
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private final PendingRecoveryBlocks pendingRecoveryBlocks;
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/** The maximum number of replicas allowed for a block */
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public final short maxReplication;
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/**
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@ -554,12 +549,6 @@ public class BlockManager implements BlockStatsMXBean {
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}
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this.minReplicationToBeInMaintenance = (short)minMaintenanceR;
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long heartbeatIntervalSecs = conf.getTimeDuration(
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DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY,
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DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_DEFAULT, TimeUnit.SECONDS);
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long blockRecoveryTimeout = getBlockRecoveryTimeout(heartbeatIntervalSecs);
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pendingRecoveryBlocks = new PendingRecoveryBlocks(blockRecoveryTimeout);
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this.blockReportLeaseManager = new BlockReportLeaseManager(conf);
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bmSafeMode = new BlockManagerSafeMode(this, namesystem, haEnabled, conf);
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@ -4747,25 +4736,6 @@ public class BlockManager implements BlockStatsMXBean {
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}
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}
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/**
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* Notification of a successful block recovery.
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* @param block for which the recovery succeeded
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*/
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public void successfulBlockRecovery(BlockInfo block) {
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pendingRecoveryBlocks.remove(block);
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}
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/**
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* Checks whether a recovery attempt has been made for the given block.
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* If so, checks whether that attempt has timed out.
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* @param b block for which recovery is being attempted
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* @return true if no recovery attempt has been made or
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* the previous attempt timed out
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*/
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public boolean addBlockRecoveryAttempt(BlockInfo b) {
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return pendingRecoveryBlocks.add(b);
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}
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@VisibleForTesting
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public void flushBlockOps() throws IOException {
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runBlockOp(new Callable<Void>(){
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@ -4893,14 +4863,4 @@ public class BlockManager implements BlockStatsMXBean {
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}
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return i;
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}
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private static long getBlockRecoveryTimeout(long heartbeatIntervalSecs) {
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return TimeUnit.SECONDS.toMillis(heartbeatIntervalSecs *
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BLOCK_RECOVERY_TIMEOUT_MULTIPLIER);
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}
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@VisibleForTesting
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public void setBlockRecoveryTimeout(long blockRecoveryTimeout) {
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pendingRecoveryBlocks.setRecoveryTimeoutInterval(blockRecoveryTimeout);
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}
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}
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@ -1,143 +0,0 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.hdfs.server.blockmanagement;
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import com.google.common.annotations.VisibleForTesting;
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import org.apache.hadoop.hdfs.util.LightWeightHashSet;
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import org.apache.hadoop.util.Time;
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import org.slf4j.Logger;
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import java.util.concurrent.TimeUnit;
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/**
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* PendingRecoveryBlocks tracks recovery attempts for each block and their
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* timeouts to ensure we do not have multiple recoveries at the same time
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* and retry only after the timeout for a recovery has expired.
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*/
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class PendingRecoveryBlocks {
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private static final Logger LOG = BlockManager.LOG;
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/** List of recovery attempts per block and the time they expire. */
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private final LightWeightHashSet<BlockRecoveryAttempt> recoveryTimeouts =
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new LightWeightHashSet<>();
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/** The timeout for issuing a block recovery again.
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* (it should be larger than the time to recover a block)
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*/
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private long recoveryTimeoutInterval;
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PendingRecoveryBlocks(long timeout) {
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this.recoveryTimeoutInterval = timeout;
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}
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/**
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* Remove recovery attempt for the given block.
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* @param block whose recovery attempt to remove.
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*/
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synchronized void remove(BlockInfo block) {
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recoveryTimeouts.remove(new BlockRecoveryAttempt(block));
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}
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/**
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* Checks whether a recovery attempt has been made for the given block.
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* If so, checks whether that attempt has timed out.
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* @param block block for which recovery is being attempted
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* @return true if no recovery attempt has been made or
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* the previous attempt timed out
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*/
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synchronized boolean add(BlockInfo block) {
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boolean added = false;
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long curTime = getTime();
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BlockRecoveryAttempt recoveryAttempt =
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recoveryTimeouts.getElement(new BlockRecoveryAttempt(block));
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if (recoveryAttempt == null) {
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BlockRecoveryAttempt newAttempt = new BlockRecoveryAttempt(
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block, curTime + recoveryTimeoutInterval);
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added = recoveryTimeouts.add(newAttempt);
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} else if (recoveryAttempt.hasTimedOut(curTime)) {
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// Previous attempt timed out, reset the timeout
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recoveryAttempt.setTimeout(curTime + recoveryTimeoutInterval);
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added = true;
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} else {
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long timeoutIn = TimeUnit.MILLISECONDS.toSeconds(
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recoveryAttempt.timeoutAt - curTime);
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LOG.info("Block recovery attempt for " + block + " rejected, as the " +
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"previous attempt times out in " + timeoutIn + " seconds.");
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}
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return added;
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}
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/**
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* Check whether the given block is under recovery.
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* @param b block for which to check
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* @return true if the given block is being recovered
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*/
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synchronized boolean isUnderRecovery(BlockInfo b) {
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BlockRecoveryAttempt recoveryAttempt =
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recoveryTimeouts.getElement(new BlockRecoveryAttempt(b));
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return recoveryAttempt != null;
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}
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long getTime() {
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return Time.monotonicNow();
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}
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@VisibleForTesting
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synchronized void setRecoveryTimeoutInterval(long recoveryTimeoutInterval) {
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this.recoveryTimeoutInterval = recoveryTimeoutInterval;
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}
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/**
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* Tracks timeout for block recovery attempt of a given block.
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*/
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private static class BlockRecoveryAttempt {
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private final BlockInfo blockInfo;
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private long timeoutAt;
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private BlockRecoveryAttempt(BlockInfo blockInfo) {
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this(blockInfo, 0);
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}
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BlockRecoveryAttempt(BlockInfo blockInfo, long timeoutAt) {
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this.blockInfo = blockInfo;
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this.timeoutAt = timeoutAt;
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}
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boolean hasTimedOut(long currentTime) {
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return currentTime > timeoutAt;
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}
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void setTimeout(long newTimeoutAt) {
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this.timeoutAt = newTimeoutAt;
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}
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@Override
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public int hashCode() {
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return blockInfo.hashCode();
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}
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@Override
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public boolean equals(Object obj) {
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if (obj instanceof BlockRecoveryAttempt) {
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return this.blockInfo.equals(((BlockRecoveryAttempt) obj).blockInfo);
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}
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return false;
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}
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}
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}
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@ -3318,19 +3318,17 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
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+ "Removed empty last block and closed file " + src);
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return true;
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}
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// Start recovery of the last block for this file
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// Only do so if there is no ongoing recovery for this block,
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// or the previous recovery for this block timed out.
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if (blockManager.addBlockRecoveryAttempt(lastBlock)) {
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// start recovery of the last block for this file
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long blockRecoveryId = nextGenerationStamp(
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blockManager.isLegacyBlock(lastBlock));
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lease = reassignLease(lease, src, recoveryLeaseHolder, pendingFile);
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if(copyOnTruncate) {
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lastBlock.setGenerationStamp(blockRecoveryId);
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} else if(truncateRecovery) {
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recoveryBlock.setGenerationStamp(blockRecoveryId);
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}
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uc.initializeBlockRecovery(lastBlock, blockRecoveryId, true);
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leaseManager.renewLease(lease);
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// Cannot close file right now, since the last block requires recovery.
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// This may potentially cause infinite loop in lease recovery
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// if there are no valid replicas on data-nodes.
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@ -3339,9 +3337,6 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
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"File " + src + " has not been closed." +
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" Lease recovery is in progress. " +
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"RecoveryId = " + blockRecoveryId + " for block " + lastBlock);
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}
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lease = reassignLease(lease, src, recoveryLeaseHolder, pendingFile);
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leaseManager.renewLease(lease);
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break;
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}
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return false;
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@ -3609,7 +3604,6 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
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// If this commit does not want to close the file, persist blocks
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FSDirWriteFileOp.persistBlocks(dir, src, iFile, false);
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}
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blockManager.successfulBlockRecovery(storedBlock);
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} finally {
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writeUnlock("commitBlockSynchronization");
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}
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@ -1,87 +0,0 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.hdfs.server.blockmanagement;
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import org.apache.hadoop.hdfs.protocol.Block;
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import org.junit.Before;
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import org.junit.Test;
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import org.mockito.Mockito;
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import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertTrue;
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/**
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* This class contains unit tests for PendingRecoveryBlocks.java functionality.
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*/
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public class TestPendingRecoveryBlocks {
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private PendingRecoveryBlocks pendingRecoveryBlocks;
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private final long recoveryTimeout = 1000L;
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private final BlockInfo blk1 = getBlock(1);
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private final BlockInfo blk2 = getBlock(2);
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private final BlockInfo blk3 = getBlock(3);
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@Before
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public void setUp() {
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pendingRecoveryBlocks =
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Mockito.spy(new PendingRecoveryBlocks(recoveryTimeout));
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}
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BlockInfo getBlock(long blockId) {
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return new BlockInfoContiguous(new Block(blockId), (short) 0);
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}
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@Test
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public void testAddDifferentBlocks() {
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assertTrue(pendingRecoveryBlocks.add(blk1));
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assertTrue(pendingRecoveryBlocks.isUnderRecovery(blk1));
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assertTrue(pendingRecoveryBlocks.add(blk2));
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assertTrue(pendingRecoveryBlocks.isUnderRecovery(blk2));
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assertTrue(pendingRecoveryBlocks.add(blk3));
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assertTrue(pendingRecoveryBlocks.isUnderRecovery(blk3));
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}
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@Test
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public void testAddAndRemoveBlocks() {
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// Add blocks
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assertTrue(pendingRecoveryBlocks.add(blk1));
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assertTrue(pendingRecoveryBlocks.add(blk2));
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// Remove blk1
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pendingRecoveryBlocks.remove(blk1);
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// Adding back blk1 should succeed
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assertTrue(pendingRecoveryBlocks.add(blk1));
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}
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@Test
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public void testAddBlockWithPreviousRecoveryTimedOut() {
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// Add blk
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Mockito.doReturn(0L).when(pendingRecoveryBlocks).getTime();
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assertTrue(pendingRecoveryBlocks.add(blk1));
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// Should fail, has not timed out yet
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Mockito.doReturn(recoveryTimeout / 2).when(pendingRecoveryBlocks).getTime();
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assertFalse(pendingRecoveryBlocks.add(blk1));
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// Should succeed after timing out
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Mockito.doReturn(recoveryTimeout * 2).when(pendingRecoveryBlocks).getTime();
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assertTrue(pendingRecoveryBlocks.add(blk1));
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}
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}
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@ -18,10 +18,7 @@
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package org.apache.hadoop.hdfs.server.datanode;
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import org.apache.hadoop.hdfs.AppendTestUtil;
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import org.apache.hadoop.hdfs.server.namenode.NameNode;
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import org.apache.hadoop.hdfs.server.protocol.SlowDiskReports;
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import static org.junit.Assert.assertTrue;
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import static org.junit.Assert.fail;
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import static org.mockito.Matchers.any;
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@ -46,7 +43,6 @@ import java.util.Collection;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Random;
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import java.util.concurrent.Semaphore;
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import java.util.concurrent.ThreadLocalRandom;
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import java.util.concurrent.TimeUnit;
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@ -98,7 +94,6 @@ import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
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import org.apache.hadoop.hdfs.server.protocol.StorageReport;
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import org.apache.hadoop.hdfs.server.protocol.VolumeFailureSummary;
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import org.apache.hadoop.test.GenericTestUtils;
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import org.apache.hadoop.test.GenericTestUtils.SleepAnswer;
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import org.apache.hadoop.util.DataChecksum;
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import org.apache.hadoop.util.Time;
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import org.apache.log4j.Level;
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@ -1040,107 +1035,4 @@ public class TestBlockRecovery {
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Assert.fail("Thread failure: " + failureReason);
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}
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}
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/**
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* Test for block recovery taking longer than the heartbeat interval.
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*/
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@Test(timeout = 300000L)
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public void testRecoverySlowerThanHeartbeat() throws Exception {
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tearDown(); // Stop the Mocked DN started in startup()
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SleepAnswer delayer = new SleepAnswer(3000, 6000);
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testRecoveryWithDatanodeDelayed(delayer);
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}
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/**
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* Test for block recovery timeout. All recovery attempts will be delayed
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* and the first attempt will be lost to trigger recovery timeout and retry.
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*/
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@Test(timeout = 300000L)
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public void testRecoveryTimeout() throws Exception {
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tearDown(); // Stop the Mocked DN started in startup()
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final Random r = new Random();
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// Make sure first commitBlockSynchronization call from the DN gets lost
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// for the recovery timeout to expire and new recovery attempt
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// to be started.
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SleepAnswer delayer = new SleepAnswer(3000) {
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private final AtomicBoolean callRealMethod = new AtomicBoolean();
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@Override
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public Object answer(InvocationOnMock invocation) throws Throwable {
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boolean interrupted = false;
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try {
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Thread.sleep(r.nextInt(3000) + 6000);
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} catch (InterruptedException ie) {
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interrupted = true;
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}
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try {
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if (callRealMethod.get()) {
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return invocation.callRealMethod();
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}
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callRealMethod.set(true);
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return null;
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} finally {
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if (interrupted) {
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Thread.currentThread().interrupt();
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}
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}
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}
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};
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testRecoveryWithDatanodeDelayed(delayer);
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}
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private void testRecoveryWithDatanodeDelayed(
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GenericTestUtils.SleepAnswer recoveryDelayer) throws Exception {
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Configuration configuration = new HdfsConfiguration();
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configuration.setLong(DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY, 1);
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MiniDFSCluster cluster = null;
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try {
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cluster = new MiniDFSCluster.Builder(configuration)
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.numDataNodes(2).build();
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cluster.waitActive();
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final FSNamesystem ns = cluster.getNamesystem();
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final NameNode nn = cluster.getNameNode();
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final DistributedFileSystem dfs = cluster.getFileSystem();
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ns.getBlockManager().setBlockRecoveryTimeout(
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TimeUnit.SECONDS.toMillis(10));
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// Create a file and never close the output stream to trigger recovery
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FSDataOutputStream out = dfs.create(new Path("/testSlowRecovery"),
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(short) 2);
|
||||
out.write(AppendTestUtil.randomBytes(0, 4096));
|
||||
out.hsync();
|
||||
|
||||
List<DataNode> dataNodes = cluster.getDataNodes();
|
||||
for (DataNode datanode : dataNodes) {
|
||||
DatanodeProtocolClientSideTranslatorPB nnSpy =
|
||||
InternalDataNodeTestUtils.spyOnBposToNN(datanode, nn);
|
||||
|
||||
Mockito.doAnswer(recoveryDelayer).when(nnSpy).
|
||||
commitBlockSynchronization(
|
||||
Mockito.any(ExtendedBlock.class), Mockito.anyInt(),
|
||||
Mockito.anyLong(), Mockito.anyBoolean(),
|
||||
Mockito.anyBoolean(), Mockito.anyObject(),
|
||||
Mockito.anyObject());
|
||||
}
|
||||
|
||||
// Make sure hard lease expires to trigger replica recovery
|
||||
cluster.setLeasePeriod(100L, 100L);
|
||||
|
||||
// Wait for recovery to succeed
|
||||
GenericTestUtils.waitFor(new Supplier<Boolean>() {
|
||||
@Override
|
||||
public Boolean get() {
|
||||
return ns.getCompleteBlocksTotal() > 0;
|
||||
}
|
||||
}, 300, 300000);
|
||||
|
||||
} finally {
|
||||
if (cluster != null) {
|
||||
cluster.shutdown();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -25,7 +25,6 @@ import static org.junit.Assert.fail;
|
|||
import java.io.IOException;
|
||||
import java.security.PrivilegedExceptionAction;
|
||||
import java.util.Random;
|
||||
import java.util.concurrent.TimeUnit;
|
||||
import java.util.concurrent.TimeoutException;
|
||||
|
||||
import org.apache.commons.logging.Log;
|
||||
|
|
@ -285,8 +284,6 @@ public class TestPipelinesFailover {
|
|||
try {
|
||||
cluster.waitActive();
|
||||
cluster.transitionToActive(0);
|
||||
cluster.getNamesystem().getBlockManager().setBlockRecoveryTimeout(
|
||||
TimeUnit.SECONDS.toMillis(1));
|
||||
Thread.sleep(500);
|
||||
|
||||
LOG.info("Starting with NN 0 active");
|
||||
|
|
|
|||
Loading…
Reference in New Issue