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Date: Mon, 26 Jun 2017 10:40:00 +0000 (UTC)
From: "Hadoop QA (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
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Subject: [jira] [Commented] (MAPREDUCE-6905) Fix meaningless operations in
 TestDFSIO in some situation.
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archived-at: Mon, 26 Jun 2017 10:40:06 -0000


    [ https://issues.apache.org/jira/browse/MAPREDUCE-6905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16062902#comment-16062902 ] 

Hadoop QA commented on MAPREDUCE-6905:
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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 34s {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} 15m 0s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 28s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 19s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 29s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 19s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m 27s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 14s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 24s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 24s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 24s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 15s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 27s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 17s {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} 0m 34s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 10s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 111m 0s {color} | {color:green} hadoop-mapreduce-client-jobclient in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 27s {color} | {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 132m 25s {color} | {color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:14b5c93 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12874447/MAPREDUCE-6905.001.patch |
| JIRA Issue | MAPREDUCE-6905 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  findbugs  checkstyle  |
| uname | Linux 9437749873fc 3.13.0-116-generic #163-Ubuntu SMP Fri Mar 31 14:13:22 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 379f19a |
| Default Java | 1.8.0_131 |
| findbugs | v3.1.0-RC1 |
|  Test Results | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7000/testReport/ |
| modules | C: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient U: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient |
| Console output | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7000/console |
| Powered by | Apache Yetus 0.3.0   http://yetus.apache.org |


This message was automatically generated.


> Fix meaningless operations in TestDFSIO in some situation.
> ----------------------------------------------------------
>
>                 Key: MAPREDUCE-6905
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6905
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: tools/rumen
>    Affects Versions: 3.0.0-alpha4
>            Reporter: LiXin Ge
>            Assignee: LiXin Ge
>              Labels: patch
>         Attachments: MAPREDUCE-6905.001.patch
>
>
> When run TestDFSIO in write mode with 2 million nrFiles, it will *takes hours* to create control files and get IOException as last because of directory item limit is exceeded. And, it will leave over 1 million useless files which will be deleted when run TestDFSIO again with acceptable nrFiles.   
> {quote}
> 17/06/21 09:12:16 INFO fs.TestDFSIO: creating control file: 1024 bytes, 2000000 files
> java.io.IOException: The directory item limit of /benchmarks/TestDFSIO/io_control is exceeded: limit=1048576 items=1048576
> 	at org.apache.hadoop.hdfs.server.namenode.FSDirectory.verifyMaxDirItems(FSDirectory.java:2033)
> 	at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:2084)
> 	at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addLastINode(FSDirectory.java:2053)
> 	at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addINode(FSDirectory.java:1873)
> 	at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addFile(FSDirectory.java:327)
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInternal(FSNamesystem.java:2750)
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInt(FSNamesystem.java:2632)
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFile(FSNamesystem.java:2520)
> 	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.create(NameNodeRpcServer.java:579)
> 	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.create(ClientNamenodeProtocolServerSideTranslatorPB.java:394)
> 	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
> 	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:619)
> 	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:962)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2040)
> 	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2036)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:415)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1656)
> 	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2034)
> 	at org.apache.hadoop.fs.TestDFSIO.createControlFile(TestDFSIO.java:302)
> 	at org.apache.hadoop.fs.TestDFSIO.run(TestDFSIO.java:751)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
> 	at org.apache.hadoop.fs.TestDFSIO.main(TestDFSIO.java:650)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:606)
> 	at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:71)
> 	at org.apache.hadoop.util.ProgramDriver.run(ProgramDriver.java:144)
> 	at org.apache.hadoop.test.MapredTestDriver.run(MapredTestDriver.java:118)
> 	at org.apache.hadoop.test.MapredTestDriver.main(MapredTestDriver.java:126)
> {quote}
> In brief, we'd better check the parameter of nrFiles before it waste our time and hurt our feelings.


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