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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17285) Misconfiguration of JVM GC options in HADOOP_CLIENT_OPTS may break `bin/hbase`
Date Fri, 22 Sep 2017 16:42:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16176692#comment-16176692
] 

Hadoop QA commented on HBASE-17285:
-----------------------------------

| (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  0s{color} | {color:blue}
Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red}  0m 12s{color} | {color:red}
HBASE-17285 does not apply to master. Rebase required? Wrong Branch? See https://yetus.apache.org/documentation/0.4.0/precommit-patchnames
for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | HBASE-17285 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12842640/HBASE-17285.001.patch
|
| Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/8746/console |
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This message was automatically generated.



> Misconfiguration of JVM GC options in HADOOP_CLIENT_OPTS may break `bin/hbase`
> ------------------------------------------------------------------------------
>
>                 Key: HBASE-17285
>                 URL: https://issues.apache.org/jira/browse/HBASE-17285
>             Project: HBase
>          Issue Type: Bug
>          Components: scripts
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>            Priority: Minor
>             Fix For: 2.0.0
>
>         Attachments: HBASE-17285.001.patch
>
>
> Had the great fun of digging through this one. Had a user reporting that hiveserver2
was no longer finding HBase jars on the classpath. This is supposed to happen via {{hbase
mapredcp}}.
> It turned out that they had configured hive-env.sh to set {{HADOOP_CLIENT_OPTS="-XX:+PrintGCDetails"}}
(among other things), which creates a big multi-line string instead of just a directory. Because
of poor quoting in {{bin/hbase}}, this gives you a wonderfully intuitive error:
> {noformat}
> Error: Could not find or load main class Heap
> {noformat}
> That {{Heap}} is actually from the JVM GC details that it was told to print. While I
don't expect this to be a common problem people run into, it's one that we can address with
better quoting. e.g.
> {noformat}
> + exec /Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/bin/java -Dproc_mapredcp
'-XX:OnOutOfMemoryError=kill -9 %p' -XX:+UseConcMarkSweepGC -Dhbase.log.dir=/usr/local/lib/hbase//logs
-Dhbase.log.file=hbase.log -Dhbase.home.dir=/usr/local/lib/hbase/ -Dhbase.id.str= -Dhbase.root.logger=INFO,console
'-Djava.library.path='\''/usr/local/lib/hadoop//lib/native' Heap PSYoungGen total 76800K,
used 7942K '[0x00000007f5500000,' 0x00000007faa80000, '0x0000000800000000)' eden space 66048K,
12% used '[0x00000007f5500000,0x00000007f5cc19c0,0x00000007f9580000)' from space 10752K, 0%
used '[0x00000007fa000000,0x00000007fa000000,0x00000007faa80000)' to space 10752K, 0% used
'[0x00000007f9580000,0x00000007f9580000,0x00000007fa000000)' ParOldGen total 174592K, used
0K '[0x00000007e0000000,' 0x00000007eaa80000, '0x00000007f5500000)' object space 174592K,
0% used '[0x00000007e0000000,0x00000007e0000000,0x00000007eaa80000)' PSPermGen total 21504K,
used 2756K '[0x00000007dae00000,' 0x00000007dc300000, '0x00000007e0000000)' object space 21504K,
12% used '[0x00000007dae00000,0x00000007db0b11b8,0x00000007dc300000)'\''' -Dhbase.security.logger=INFO,NullAppender
org.apache.hadoop.hbase.util.MapreduceDependencyClasspathTool
> {noformat}



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