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https://issues.apache.org/jira/browse/HDFS-11515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15950731#comment-15950731
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Hadoop QA commented on HDFS-11515:
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| (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
20s{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} 16m
3s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
5s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
44s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
15s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
17s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m
20s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
50s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
9s{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 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
52s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}
0m 38s{color} | {color:orange} hadoop-hdfs-project/hadoop-hdfs: The patch
generated 1 new + 143 unchanged - 0 fixed = 144 total (was 143) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
58s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
12s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m
7s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
43s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 72m 24s{color}
| {color:red} hadoop-hdfs in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
20s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}103m 41s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hdfs.server.namenode.TestDecommissioningStatus |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:a9ad5d6 |
| JIRA Issue | HDFS-11515 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12861415/HDFS-11515.002.patch |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit findbugs checkstyle |
| uname | Linux 5633cd9b1f5b 3.13.0-105-generic #152-Ubuntu SMP Fri Dec 2
15:37:11 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh
|
| git revision | trunk / 28cdc5a |
| Default Java | 1.8.0_121 |
| findbugs | v3.0.0 |
| checkstyle |
https://builds.apache.org/job/PreCommit-HDFS-Build/18930/artifact/patchprocess/diff-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt
|
| unit |
https://builds.apache.org/job/PreCommit-HDFS-Build/18930/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/18930/testReport/ |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U:
hadoop-hdfs-project/hadoop-hdfs |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/18930/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> -du throws ConcurrentModificationException
> ------------------------------------------
>
> Key: HDFS-11515
> URL: https://issues.apache.org/jira/browse/HDFS-11515
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode, shell
> Affects Versions: 2.8.0, 3.0.0-alpha2
> Reporter: Wei-Chiu Chuang
> Assignee: Istvan Fajth
> Attachments: HDFS-11515.001.patch, HDFS-11515.002.patch,
> HDFS-11515.test.patch
>
>
> HDFS-10797 fixed a disk summary (-du) bug, but it introduced a new bug.
> The bug can be reproduced running the following commands:
> {noformat}
> bash-4.1$ hdfs dfs -mkdir /tmp/d0
> bash-4.1$ hdfs dfsadmin -allowSnapshot /tmp/d0
> Allowing snaphot on /tmp/d0 succeeded
> bash-4.1$ hdfs dfs -touchz /tmp/d0/f4
> bash-4.1$ hdfs dfs -mkdir /tmp/d0/d1
> bash-4.1$ hdfs dfs -createSnapshot /tmp/d0 s1
> Created snapshot /tmp/d0/.snapshot/s1
> bash-4.1$ hdfs dfs -mkdir /tmp/d0/d1/d2
> bash-4.1$ hdfs dfs -mkdir /tmp/d0/d1/d3
> bash-4.1$ hdfs dfs -mkdir /tmp/d0/d1/d2/d4
> bash-4.1$ hdfs dfs -mkdir /tmp/d0/d1/d3/d5
> bash-4.1$ hdfs dfs -createSnapshot /tmp/d0 s2
> Created snapshot /tmp/d0/.snapshot/s2
> bash-4.1$ hdfs dfs -rmdir /tmp/d0/d1/d2/d4
> bash-4.1$ hdfs dfs -rmdir /tmp/d0/d1/d2
> bash-4.1$ hdfs dfs -rmdir /tmp/d0/d1/d3/d5
> bash-4.1$ hdfs dfs -rmdir /tmp/d0/d1/d3
> bash-4.1$ hdfs dfs -du -h /tmp/d0
> du: java.util.ConcurrentModificationException
> 0 0 /tmp/d0/f4
> {noformat}
> A ConcurrentModificationException forced du to terminate abruptly.
> Correspondingly, NameNode log has the following error:
> {noformat}
> 2017-03-08 14:32:17,673 WARN org.apache.hadoop.ipc.Server: IPC Server handler
> 4 on 8020, call org.apache.hadoop.hdfs.protocol.ClientProtocol.getContentSumma
> ry from 10.0.0.198:49957 Call#2 Retry#0
> java.util.ConcurrentModificationException
> at java.util.HashMap$HashIterator.nextEntry(HashMap.java:922)
> at java.util.HashMap$KeyIterator.next(HashMap.java:956)
> at
> org.apache.hadoop.hdfs.server.namenode.ContentSummaryComputationContext.tallyDeletedSnapshottedINodes(ContentSummaryComputationContext.java:209)
> at
> org.apache.hadoop.hdfs.server.namenode.INode.computeAndConvertContentSummary(INode.java:507)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.getContentSummary(FSDirectory.java:2302)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getContentSummary(FSNamesystem.java:4535)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getContentSummary(NameNodeRpcServer.java:1087)
> at
> org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.getContentSummary(AuthorizationProviderProxyClientProtocol.java:5
> 63)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getContentSummary(ClientNamenodeProtocolServerSideTranslatorPB.jav
> a:873)
> at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2216)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2212)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1920)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2210)
> {noformat}
> The bug is due to a improper use of HashSet, not concurrent operations.
> Basically, a HashSet can not be updated while an iterator is traversing it.
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