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https://issues.apache.org/jira/browse/HDFS-9412?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15239642#comment-15239642
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Hadoop QA commented on HDFS-9412:
---------------------------------
| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 16s
{color} | {color:blue} Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s
{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:red}-1{color} | {color:red} test4tests {color} | {color:red} 0m 0s
{color} | {color:red} The patch doesn't appear to include any new or modified
tests. Please justify why no new tests are needed for this patch. Also please
list what manual steps were performed to verify this patch. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 7m
41s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 55s
{color} | {color:green} trunk passed with JDK v1.8.0_77 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 47s
{color} | {color:green} trunk passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
22s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m 9s
{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
21s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m
34s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 47s
{color} | {color:green} trunk passed with JDK v1.8.0_77 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 2m 28s
{color} | {color:green} trunk passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
2s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 4s
{color} | {color:green} the patch passed with JDK v1.8.0_77 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 4s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 52s
{color} | {color:green} the patch passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 52s
{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m 29s
{color} | {color:red} hadoop-hdfs-project/hadoop-hdfs: patch generated 1 new +
130 unchanged - 0 fixed = 131 total (was 130) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m 14s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
19s {color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red} 0m 0s
{color} | {color:red} The patch has 1 line(s) that end in whitespace. Use git
apply --whitespace=fix. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m
59s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 48s
{color} | {color:green} the patch passed with JDK v1.8.0_77 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 2m 11s
{color} | {color:green} the patch passed with JDK v1.7.0_95 {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 115m 4s {color}
| {color:red} hadoop-hdfs in the patch failed with JDK v1.8.0_77. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 107m 12s
{color} | {color:red} hadoop-hdfs in the patch failed with JDK v1.7.0_95.
{color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
31s {color} | {color:green} Patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 256m 9s {color}
| {color:black} {color} |
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|| Reason || Tests ||
| JDK v1.8.0_77 Failed junit tests |
hadoop.hdfs.server.datanode.TestDataNodeUUID |
| | hadoop.hdfs.TestBlockStoragePolicy |
| | hadoop.hdfs.server.namenode.web.resources.TestWebHdfsDataLocality |
| | hadoop.hdfs.TestDFSStripedOutputStreamWithFailure |
| | hadoop.hdfs.server.blockmanagement.TestNameNodePrunesMissingStorages |
| | hadoop.hdfs.TestReadStripedFileWithMissingBlocks |
| | hadoop.hdfs.server.namenode.ha.TestEditLogTailer |
| | hadoop.hdfs.server.datanode.TestDiskError |
| | hadoop.hdfs.shortcircuit.TestShortCircuitCache |
| | hadoop.hdfs.server.datanode.TestDataNodeMultipleRegistrations |
| | hadoop.hdfs.TestGetBlocks |
| | hadoop.hdfs.shortcircuit.TestShortCircuitLocalRead |
| | hadoop.hdfs.server.datanode.TestDataNodeLifeline |
| | hadoop.hdfs.server.datanode.TestIncrementalBrVariations |
| | hadoop.hdfs.server.datanode.TestDataNodeVolumeFailure |
| | hadoop.hdfs.server.datanode.TestNNHandlesBlockReportPerStorage |
| | hadoop.hdfs.server.namenode.TestEditLog |
| | hadoop.hdfs.server.datanode.TestCachingStrategy |
| | hadoop.hdfs.server.namenode.TestNamenodeCapacityReport |
| | hadoop.hdfs.server.blockmanagement.TestUnderReplicatedBlocks |
| | hadoop.hdfs.server.namenode.ha.TestRequestHedgingProxyProvider |
| | hadoop.hdfs.server.blockmanagement.TestNodeCount |
| | hadoop.hdfs.server.namenode.TestCacheDirectives |
| | hadoop.hdfs.server.blockmanagement.TestComputeInvalidateWork |
| | hadoop.hdfs.server.datanode.TestDirectoryScanner |
| JDK v1.8.0_77 Timed out junit tests |
org.apache.hadoop.hdfs.TestWriteReadStripedFile |
| | org.apache.hadoop.hdfs.TestReadStripedFileWithDecoding |
| JDK v1.7.0_95 Failed junit tests |
hadoop.hdfs.server.datanode.TestDataNodeUUID |
| | hadoop.hdfs.TestDFSStripedOutputStreamWithFailure |
| | hadoop.hdfs.TestReadStripedFileWithMissingBlocks |
| | hadoop.hdfs.server.namenode.TestNamenodeRetryCache |
| | hadoop.hdfs.server.namenode.snapshot.TestSnapshotDeletion |
| | hadoop.hdfs.server.namenode.ha.TestEditLogTailer |
| | hadoop.hdfs.server.namenode.TestParallelImageWrite |
| | hadoop.hdfs.shortcircuit.TestShortCircuitCache |
| | hadoop.hdfs.TestGetBlocks |
| | hadoop.hdfs.shortcircuit.TestShortCircuitLocalRead |
| | hadoop.hdfs.server.datanode.TestDataNodeVolumeFailure |
| | hadoop.hdfs.server.namenode.snapshot.TestSnapshot |
| | hadoop.hdfs.server.datanode.fsdataset.impl.TestWriteToReplica |
| | hadoop.hdfs.server.datanode.TestDirectoryScanner |
| JDK v1.7.0_95 Timed out junit tests |
org.apache.hadoop.hdfs.TestWriteReadStripedFile |
| | org.apache.hadoop.hdfs.TestReadStripedFileWithDecoding |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:fbe3e86 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12798500/HDFS-9412.0001.patch |
| JIRA Issue | HDFS-9412 |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit findbugs checkstyle |
| uname | Linux c1d54459586d 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed
Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh
|
| git revision | trunk / 903428b |
| Default Java | 1.7.0_95 |
| Multi-JDK versions | /usr/lib/jvm/java-8-oracle:1.8.0_77
/usr/lib/jvm/java-7-openjdk-amd64:1.7.0_95 |
| findbugs | v3.0.0 |
| checkstyle |
https://builds.apache.org/job/PreCommit-HDFS-Build/15148/artifact/patchprocess/diff-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt
|
| whitespace |
https://builds.apache.org/job/PreCommit-HDFS-Build/15148/artifact/patchprocess/whitespace-eol.txt
|
| unit |
https://builds.apache.org/job/PreCommit-HDFS-Build/15148/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_77.txt
|
| unit |
https://builds.apache.org/job/PreCommit-HDFS-Build/15148/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_95.txt
|
| unit test logs |
https://builds.apache.org/job/PreCommit-HDFS-Build/15148/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_77.txt
https://builds.apache.org/job/PreCommit-HDFS-Build/15148/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_95.txt
|
| JDK v1.7.0_95 Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/15148/testReport/ |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U:
hadoop-hdfs-project/hadoop-hdfs |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/15148/console |
| Powered by | Apache Yetus 0.2.0 http://yetus.apache.org |
This message was automatically generated.
> getBlocks occupies FSLock and takes too long to complete
> --------------------------------------------------------
>
> Key: HDFS-9412
> URL: https://issues.apache.org/jira/browse/HDFS-9412
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: He Tianyi
> Assignee: He Tianyi
> Attachments: HDFS-9412.0000.patch, HDFS-9412.0001.patch
>
>
> {{getBlocks}} in {{NameNodeRpcServer}} acquires a read lock then may take a
> long time to complete (probably several seconds, if number of blocks are too
> much).
> During this period, other threads attempting to acquire write lock will wait.
> In an extreme case, RPC handlers are occupied by one reader thread calling
> {{getBlocks}} and all other threads waiting for write lock, rpc server acts
> like hung. Unfortunately, this tends to happen in heavy loaded cluster, since
> read operations come and go fast (they do not need to wait), leaving write
> operations waiting.
> Looks like we can optimize this thing like DN block report did in past, by
> splitting the operation into smaller sub operations, and let other threads do
> their work between each sub operation. The whole result is returned at once,
> though (one thing different from DN block report).
> I am not sure whether this will work. Any better idea?
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