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Posted to common-commits@hadoop.apache.org by ar...@apache.org on 2017/06/30 00:15:37 UTC
hadoop git commit: HDFS-12043. Add counters for block re-replication.
Contributed by Chen Liang.
Repository: hadoop
Updated Branches:
refs/heads/trunk 72993b33b -> 900221f95
HDFS-12043. Add counters for block re-replication. Contributed by Chen Liang.
Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/900221f9
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/900221f9
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/900221f9
Branch: refs/heads/trunk
Commit: 900221f95ea9fe1936b4d5f277e6047ee8734eca
Parents: 72993b3
Author: Arpit Agarwal <ar...@apache.org>
Authored: Thu Jun 29 17:15:13 2017 -0700
Committer: Arpit Agarwal <ar...@apache.org>
Committed: Thu Jun 29 17:15:13 2017 -0700
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.../server/blockmanagement/BlockManager.java | 13 ++-
.../PendingReconstructionBlocks.java | 8 +-
.../namenode/metrics/NameNodeMetrics.java | 18 ++++
.../TestPendingReconstruction.java | 86 +++++++++++++++++++-
4 files changed, 118 insertions(+), 7 deletions(-)
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http://git-wip-us.apache.org/repos/asf/hadoop/blob/900221f9/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
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diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
index a0c4698..a5ee30b 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
@@ -1851,7 +1851,7 @@ public class BlockManager implements BlockStatsMXBean {
(pendingReplicaNum > 0 || isPlacementPolicySatisfied(block));
}
- private BlockReconstructionWork scheduleReconstruction(BlockInfo block,
+ BlockReconstructionWork scheduleReconstruction(BlockInfo block,
int priority) {
// skip abandoned block or block reopened for append
if (block.isDeleted() || !block.isCompleteOrCommitted()) {
@@ -1873,6 +1873,7 @@ public class BlockManager implements BlockStatsMXBean {
if(srcNodes == null || srcNodes.length == 0) {
// block can not be reconstructed from any node
LOG.debug("Block {} cannot be reconstructed from any node", block);
+ NameNode.getNameNodeMetrics().incNumTimesReReplicationNotScheduled();
return null;
}
@@ -1885,6 +1886,7 @@ public class BlockManager implements BlockStatsMXBean {
neededReconstruction.remove(block, priority);
blockLog.debug("BLOCK* Removing {} from neededReconstruction as" +
" it has enough replicas", block);
+ NameNode.getNameNodeMetrics().incNumTimesReReplicationNotScheduled();
return null;
}
@@ -1900,6 +1902,7 @@ public class BlockManager implements BlockStatsMXBean {
if (block.isStriped()) {
if (pendingNum > 0) {
// Wait the previous reconstruction to finish.
+ NameNode.getNameNodeMetrics().incNumTimesReReplicationNotScheduled();
return null;
}
@@ -3727,8 +3730,8 @@ public class BlockManager implements BlockStatsMXBean {
* The given node is reporting that it received a certain block.
*/
@VisibleForTesting
- void addBlock(DatanodeStorageInfo storageInfo, Block block, String delHint)
- throws IOException {
+ public void addBlock(DatanodeStorageInfo storageInfo, Block block,
+ String delHint) throws IOException {
DatanodeDescriptor node = storageInfo.getDatanodeDescriptor();
// Decrement number of blocks scheduled to this datanode.
// for a retry request (of DatanodeProtocol#blockReceivedAndDeleted with
@@ -3751,7 +3754,9 @@ public class BlockManager implements BlockStatsMXBean {
BlockInfo storedBlock = getStoredBlock(block);
if (storedBlock != null &&
block.getGenerationStamp() == storedBlock.getGenerationStamp()) {
- pendingReconstruction.decrement(storedBlock, node);
+ if (pendingReconstruction.decrement(storedBlock, node)) {
+ NameNode.getNameNodeMetrics().incSuccessfulReReplications();
+ }
}
processAndHandleReportedBlock(storageInfo, block, ReplicaState.FINALIZED,
delHintNode);
http://git-wip-us.apache.org/repos/asf/hadoop/blob/900221f9/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/PendingReconstructionBlocks.java
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/PendingReconstructionBlocks.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/PendingReconstructionBlocks.java
index 2221d1d..0f20daa 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/PendingReconstructionBlocks.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/PendingReconstructionBlocks.java
@@ -30,6 +30,7 @@ import java.util.List;
import java.util.Map;
import org.apache.hadoop.hdfs.protocol.Block;
+import org.apache.hadoop.hdfs.server.namenode.NameNode;
import org.apache.hadoop.util.Daemon;
import org.slf4j.Logger;
@@ -97,8 +98,10 @@ class PendingReconstructionBlocks {
* for this block.
*
* @param dn The DataNode that finishes the reconstruction
+ * @return true if the block is decremented to 0 and got removed.
*/
- void decrement(BlockInfo block, DatanodeDescriptor dn) {
+ boolean decrement(BlockInfo block, DatanodeDescriptor dn) {
+ boolean removed = false;
synchronized (pendingReconstructions) {
PendingBlockInfo found = pendingReconstructions.get(block);
if (found != null) {
@@ -106,9 +109,11 @@ class PendingReconstructionBlocks {
found.decrementReplicas(dn);
if (found.getNumReplicas() <= 0) {
pendingReconstructions.remove(block);
+ removed = true;
}
}
}
+ return removed;
}
/**
@@ -263,6 +268,7 @@ class PendingReconstructionBlocks {
timedOutItems.add(block);
}
LOG.warn("PendingReconstructionMonitor timed out " + block);
+ NameNode.getNameNodeMetrics().incTimeoutReReplications();
iter.remove();
}
}
http://git-wip-us.apache.org/repos/asf/hadoop/blob/900221f9/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/metrics/NameNodeMetrics.java
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/metrics/NameNodeMetrics.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/metrics/NameNodeMetrics.java
index cb81f5a..f2534e4 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/metrics/NameNodeMetrics.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/metrics/NameNodeMetrics.java
@@ -58,6 +58,12 @@ public class NameNodeMetrics {
@Metric MutableCounterLong createSymlinkOps;
@Metric MutableCounterLong getLinkTargetOps;
@Metric MutableCounterLong filesInGetListingOps;
+ @Metric ("Number of successful re-replications")
+ MutableCounterLong successfulReReplications;
+ @Metric ("Number of times we failed to schedule a block re-replication.")
+ MutableCounterLong numTimesReReplicationNotScheduled;
+ @Metric("Number of timed out block re-replications")
+ MutableCounterLong timeoutReReplications;
@Metric("Number of allowSnapshot operations")
MutableCounterLong allowSnapshotOps;
@Metric("Number of disallowSnapshot operations")
@@ -300,6 +306,18 @@ public class NameNodeMetrics {
transactionsBatchedInSync.incr(count);
}
+ public void incSuccessfulReReplications() {
+ successfulReReplications.incr();
+ }
+
+ public void incNumTimesReReplicationNotScheduled() {
+ numTimesReReplicationNotScheduled.incr();
+ }
+
+ public void incTimeoutReReplications() {
+ timeoutReReplications.incr();
+ }
+
public void addSync(long elapsed) {
syncs.add(elapsed);
for (MutableQuantiles q : syncsQuantiles) {
http://git-wip-us.apache.org/repos/asf/hadoop/blob/900221f9/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestPendingReconstruction.java
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestPendingReconstruction.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestPendingReconstruction.java
index 7679f9d..042eae7 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestPendingReconstruction.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestPendingReconstruction.java
@@ -17,6 +17,10 @@
*/
package org.apache.hadoop.hdfs.server.blockmanagement;
+import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_RECONSTRUCTION_PENDING_TIMEOUT_SEC_KEY;
+import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_REDUNDANCY_INTERVAL_SECONDS_KEY;
+import static org.apache.hadoop.test.MetricsAsserts.assertCounter;
+import static org.apache.hadoop.test.MetricsAsserts.getMetrics;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
@@ -44,6 +48,7 @@ import org.apache.hadoop.hdfs.server.protocol.DatanodeStorage;
import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo;
import org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo.BlockStatus;
import org.apache.hadoop.hdfs.server.protocol.StorageReceivedDeletedBlocks;
+import org.apache.hadoop.metrics2.MetricsRecordBuilder;
import org.junit.Test;
import org.mockito.Mockito;
@@ -178,7 +183,7 @@ public class TestPendingReconstruction {
public void testProcessPendingReconstructions() throws Exception {
final Configuration conf = new HdfsConfiguration();
conf.setLong(
- DFSConfigKeys.DFS_NAMENODE_RECONSTRUCTION_PENDING_TIMEOUT_SEC_KEY, TIMEOUT);
+ DFS_NAMENODE_RECONSTRUCTION_PENDING_TIMEOUT_SEC_KEY, TIMEOUT);
MiniDFSCluster cluster = null;
Block block;
BlockInfo blockInfo;
@@ -418,7 +423,7 @@ public class TestPendingReconstruction {
CONF.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, 1024);
CONF.setLong(DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY,
DFS_REPLICATION_INTERVAL);
- CONF.setInt(DFSConfigKeys.DFS_NAMENODE_REDUNDANCY_INTERVAL_SECONDS_KEY,
+ CONF.setInt(DFS_NAMENODE_REDUNDANCY_INTERVAL_SECONDS_KEY,
DFS_REPLICATION_INTERVAL);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(CONF).numDataNodes(
DATANODE_COUNT).build();
@@ -471,4 +476,81 @@ public class TestPendingReconstruction {
cluster.shutdown();
}
}
+
+ @Test
+ public void testReplicationCounter() throws Exception {
+ HdfsConfiguration conf = new HdfsConfiguration();
+ conf.setInt(DFS_NAMENODE_REDUNDANCY_INTERVAL_SECONDS_KEY, 1);
+ conf.setInt(DFS_NAMENODE_RECONSTRUCTION_PENDING_TIMEOUT_SEC_KEY, 2);
+ MiniDFSCluster tmpCluster = new MiniDFSCluster.Builder(conf).numDataNodes(
+ DATANODE_COUNT).build();
+ tmpCluster.waitActive();
+ FSNamesystem fsn = tmpCluster.getNamesystem(0);
+ fsn.writeLock();
+
+ try {
+ BlockManager bm = fsn.getBlockManager();
+ BlocksMap blocksMap = bm.blocksMap;
+
+ // create three blockInfo below, blockInfo0 will success, blockInfo1 will
+ // time out, blockInfo2 will fail the replication.
+ BlockCollection bc0 = Mockito.mock(BlockCollection.class);
+ BlockInfo blockInfo0 = new BlockInfoContiguous((short) 3);
+ blockInfo0.setBlockId(0);
+
+ BlockCollection bc1 = Mockito.mock(BlockCollection.class);
+ BlockInfo blockInfo1 = new BlockInfoContiguous((short) 3);
+ blockInfo1.setBlockId(1);
+
+ BlockCollection bc2 = Mockito.mock(BlockCollection.class);
+ Mockito.when(bc2.getId()).thenReturn((2L));
+ BlockInfo blockInfo2 = new BlockInfoContiguous((short) 3);
+ blockInfo2.setBlockId(2);
+
+ blocksMap.addBlockCollection(blockInfo0, bc0);
+ blocksMap.addBlockCollection(blockInfo1, bc1);
+ blocksMap.addBlockCollection(blockInfo2, bc2);
+
+ PendingReconstructionBlocks pending = bm.pendingReconstruction;
+
+ MetricsRecordBuilder rb = getMetrics("NameNodeActivity");
+ assertCounter("SuccessfulReReplications", 0L, rb);
+ assertCounter("NumTimesReReplicationNotScheduled", 0L, rb);
+ assertCounter("TimeoutReReplications", 0L, rb);
+
+ // add block0 and block1 to pending queue.
+ pending.increment(blockInfo0);
+ pending.increment(blockInfo1);
+
+ Thread.sleep(2000);
+
+ rb = getMetrics("NameNodeActivity");
+ assertCounter("SuccessfulReReplications", 0L, rb);
+ assertCounter("NumTimesReReplicationNotScheduled", 0L, rb);
+ assertCounter("TimeoutReReplications", 0L, rb);
+
+ // call addBlock on block0 will make it successfully replicated.
+ // not callign addBlock on block1 will make it timeout later.
+ DatanodeStorageInfo[] storageInfos =
+ DFSTestUtil.createDatanodeStorageInfos(1);
+ bm.addBlock(storageInfos[0], blockInfo0, null);
+
+ // call schedule replication on blockInfo2 will fail the re-replication.
+ // because there is no source data to replicate from.
+ bm.scheduleReconstruction(blockInfo2, 0);
+
+ Thread.sleep(2000);
+
+ rb = getMetrics("NameNodeActivity");
+ assertCounter("SuccessfulReReplications", 1L, rb);
+ assertCounter("NumTimesReReplicationNotScheduled", 1L, rb);
+ assertCounter("TimeoutReReplications", 1L, rb);
+
+ } finally {
+ tmpCluster.shutdown();
+ fsn.writeUnlock();
+ }
+ }
+
+
}
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