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https://issues.apache.org/jira/browse/MAPREDUCE-7015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16328676#comment-16328676
]
Hadoop QA commented on MAPREDUCE-7015:
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
9s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {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:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 15m
22s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
25s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
17s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
28s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
10m 8s{color} | {color:green} branch has no errors when building and testing
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m
32s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
18s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {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
20s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
20s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
13s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
22s{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} shadedclient {color} | {color:green}
10m 28s{color} | {color:green} patch has no errors when building and testing
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m
38s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
17s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 3m
24s{color} | {color:green} hadoop-mapreduce-client-hs in the patch passed.
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| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
20s{color} | {color:green} The patch does not generate ASF License warnings.
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| {color:black}{color} | {color:black} {color} | {color:black} 44m 19s{color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:5b98639 |
| JIRA Issue | MAPREDUCE-7015 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12906392/MAPREDUCE-7015-001.patch
|
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit shadedclient findbugs checkstyle |
| uname | Linux 977fe21f2594 4.4.0-43-generic #63-Ubuntu SMP Wed Oct 12
13:48:03 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 09efdfe |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_151 |
| findbugs | v3.1.0-RC1 |
| Test Results |
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7302/testReport/ |
| Max. process+thread count | 440 (vs. ulimit of 5000) |
| modules | C:
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs U:
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs |
| Console output |
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7302/console |
| Powered by | Apache Yetus 0.7.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> Possible race condition in JHS if the job is not loaded
> -------------------------------------------------------
>
> Key: MAPREDUCE-7015
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7015
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobhistoryserver
> Reporter: Peter Bacsko
> Assignee: Peter Bacsko
> Priority: Major
> Attachments: MAPREDUCE-7015-001.patch, MAPREDUCE-7015-POC01.patch,
> MAPREDUCE-7015-POC02.patch
>
>
> There could be a race condition inside JHS. In our build environment,
> {{TestMRJobClient.testJobClient()}} failed with this exception:
> {noformat}
> ava.io.FileNotFoundException: File does not exist:
> hdfs://localhost:32836/tmp/hadoop-yarn/staging/history/done_intermediate/jenkins/job_1509975084722_0001_conf.xml
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$20.doCall(DistributedFileSystem.java:1266)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$20.doCall(DistributedFileSystem.java:1258)
> at
> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1258)
> at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:340)
> at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:292)
> at org.apache.hadoop.fs.FileSystem.copyToLocalFile(FileSystem.java:2123)
> at org.apache.hadoop.fs.FileSystem.copyToLocalFile(FileSystem.java:2092)
> at org.apache.hadoop.fs.FileSystem.copyToLocalFile(FileSystem.java:2068)
> at org.apache.hadoop.mapreduce.tools.CLI.run(CLI.java:460)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> at
> org.apache.hadoop.mapreduce.TestMRJobClient.runTool(TestMRJobClient.java:94)
> at
> org.apache.hadoop.mapreduce.TestMRJobClient.testConfig(TestMRJobClient.java:551)
> at
> org.apache.hadoop.mapreduce.TestMRJobClient.testJobClient(TestMRJobClient.java:167)
> {noformat}
> Root cause:
> 1. MapReduce job completes
> 2. CLI calls {{cluster.getJob(jobid)}}
> 3. The job is finished and the client side gets redirected to JHS
> 4. The job data is missing from {{CachedHistoryStorage}} so JHS tries to find
> the job
> 5. First it scans the intermediate directory and finds the job
> 6. The call {{moveToDone()}} is scheduled for execution on a separate thread
> inside {{moveToDoneExecutor}} and it starts to run immediately
> 7. RPC invocation returns with the path pointing to
> {{/tmp/hadoop-yarn/staging/history/done_intermediate}}
> 8. The call to {{moveToDone()}} completes which moves the contents of
> {{done_intermediate}} to {{done}}
> 9. Hadoop CLI tries to download the config file from done_intermediate but
> it's no longer there
> Usually step #6 is slow enough to complete after #7, but sometimes it's
> faster, causing this race condition.
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