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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9781) FsDatasetImpl#getBlockReports can occasionally throw NullPointerException
Date Sat, 10 Sep 2016 00:55:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9781?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15478821#comment-15478821
] 

Hadoop QA commented on HDFS-9781:
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| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 23s{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:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m  0s{color}
| {color:green} The patch appears to include 1 new or modified test files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  7m 44s{color}
| {color:green} branch-2 passed {color} |
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{color:green} branch-2 passed with JDK v1.8.0_101 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 51s{color} |
{color:green} branch-2 passed with JDK v1.7.0_111 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 39s{color}
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{color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 10s{color} |
{color:green} branch-2 passed with JDK v1.8.0_101 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 45s{color} |
{color:green} branch-2 passed with JDK v1.7.0_111 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 48s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 43s{color} |
{color:green} the patch passed with JDK v1.8.0_101 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 43s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 46s{color} |
{color:green} the patch passed with JDK v1.7.0_111 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 46s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 30s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 59s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 14s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m  0s{color}
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| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m 25s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m  1s{color} |
{color:green} the patch passed with JDK v1.8.0_101 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 43s{color} |
{color:green} the patch passed with JDK v1.7.0_111 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 64m 30s{color} | {color:green}
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| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 21s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}162m  8s{color} | {color:black}
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|| Reason || Tests ||
| JDK v1.8.0_101 Failed junit tests | hadoop.hdfs.server.namenode.TestNameNodeMetadataConsistency
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:b59b8b7 |
| JIRA Issue | HDFS-9781 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12827841/HDFS-9781-branch-2.004.patch
|
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  findbugs
 checkstyle  |
| uname | Linux 9bdbfe61e846 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 | branch-2 / f448ce2 |
| Default Java | 1.7.0_111 |
| Multi-JDK versions |  /usr/lib/jvm/java-8-oracle:1.8.0_101 /usr/lib/jvm/java-7-openjdk-amd64:1.7.0_111
|
| findbugs | v3.0.0 |
| JDK v1.7.0_111  Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/16696/testReport/
|
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project/hadoop-hdfs |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/16696/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> FsDatasetImpl#getBlockReports can occasionally throw NullPointerException
> -------------------------------------------------------------------------
>
>                 Key: HDFS-9781
>                 URL: https://issues.apache.org/jira/browse/HDFS-9781
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 3.0.0-alpha1
>         Environment: Jenkins
>            Reporter: Wei-Chiu Chuang
>            Assignee: Manoj Govindassamy
>             Fix For: 3.0.0-alpha2
>
>         Attachments: HDFS-9781-branch-2.001.patch, HDFS-9781-branch-2.002.patch, HDFS-9781-branch-2.003.patch,
HDFS-9781-branch-2.004.patch, HDFS-9781.002.patch, HDFS-9781.003.patch, HDFS-9781.004.patch,
HDFS-9781.01.patch, HDFS-9781.branch-2.001.patch
>
>
> FsDatasetImpl#getBlockReports occasionally throws NPE. The NPE caused TestFsDatasetImpl#testRemoveVolumeBeingWritten
to time out, because the test waits for the call to FsDatasetImpl#getBlockReports to complete
without exceptions.
> Additionally, the test should be updated to identify an expected exception, using {{GenericTestUtils.assertExceptionContains()}}
> {noformat}
> Exception in thread "Thread-20" java.lang.NullPointerException
>         at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.getBlockReports(FsDatasetImpl.java:1709)
>         at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.TestFsDatasetImpl$1BlockReportThread.run(TestFsDatasetImpl.java:587)
> 2016-02-08 15:47:30,379 [Thread-21] WARN  impl.TestFsDatasetImpl (TestFsDatasetImpl.java:run(606))
- Exception caught. This should not affect the test
> java.io.IOException: Failed to move meta file for ReplicaBeingWritten, blk_0_0, RBW
>   getNumBytes()     = 0
>   getBytesOnDisk()  = 0
>   getVisibleLength()= 0
>   getVolume()       = /home/weichiu/hadoop/hadoop-hdfs-project/hadoop-hdfs/target/test/data/Nmi6rYndvr/data0/current
>   getBlockFile()    = /home/weichiu/hadoop/hadoop-hdfs-project/hadoop-hdfs/target/test/data/Nmi6rYndvr/data0/current/bpid-0/current/rbw/blk_0
>   bytesAcked=0
>   bytesOnDisk=0 from /home/weichiu/hadoop/hadoop-hdfs-project/hadoop-hdfs/target/test/data/Nmi6rYndvr/data0/current/bpid-0/current/rbw/blk_0_0.meta
to /home/weichiu/hadoop/hadoop-hdfs-project/hadoop-hdfs/target/test/data/Nmi6rYndvr/data0/current/bpid-0/current/finalized/subdir0/subdir0/blk_0_0.meta
>         at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.moveBlockFiles(FsDatasetImpl.java:857)
>         at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice.addFinalizedBlock(BlockPoolSlice.java:295)
>         at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeImpl.addFinalizedBlock(FsVolumeImpl.java:819)
>         at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.finalizeReplica(FsDatasetImpl.java:1620)
>         at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.finalizeBlock(FsDatasetImpl.java:1601)
>         at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.TestFsDatasetImpl$1ResponderThread.run(TestFsDatasetImpl.java:603)
> Caused by: java.io.IOException: renameTo(src=/home/weichiu/hadoop/hadoop-hdfs-project/hadoop-hdfs/target/test/data/Nmi6rYndvr/data0/current/bpid-0/current/rbw/blk_0_0.meta,
dst=/home/weichiu/hadoop/hadoop-hdfs-project/hadoop-hdfs/target/test/data/Nmi6rYndvr/data0/current/bpid-0/current/finalized/subdir0/subdir0/blk_0_0.meta)
failed.
>         at org.apache.hadoop.io.nativeio.NativeIO.renameTo(NativeIO.java:873)
>         at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.moveBlockFiles(FsDatasetImpl.java:855)
>         ... 5 more
> 2016-02-08 15:47:34,381 [Thread-19] INFO  impl.FsDatasetImpl (FsVolumeList.java:waitVolumeRemoved(287))
- Volume reference is released.
> 2016-02-08 15:47:34,384 [Thread-19] INFO  impl.TestFsDatasetImpl (TestFsDatasetImpl.java:testRemoveVolumeBeingWritten(622))
- Volumes removed
> {noformat}



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