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From "Chris Trezzo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11361) Fix a race condition in MetricsSourceAdapter.updateJmxCache
Date Mon, 08 Aug 2016 23:07:20 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11361?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15412622#comment-15412622
] 

Chris Trezzo commented on HADOOP-11361:
---------------------------------------

[~ozawa] I noticed that the target version for this jira states 2.6.5, but the fix version
does not list 2.6.5 (in-line with the commit not being in branch-2.6). Do we want to backport
to branch-2.6 as well, or should we remove 2.6.5 from target versions? Thanks!

> Fix a race condition in MetricsSourceAdapter.updateJmxCache
> -----------------------------------------------------------
>
>                 Key: HADOOP-11361
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11361
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.4.1, 2.5.1, 2.6.0
>            Reporter: Brahma Reddy Battula
>            Assignee: Brahma Reddy Battula
>              Labels: supportability
>             Fix For: 2.8.0, 2.9.0, 2.7.4, 3.0.0-alpha1
>
>         Attachments: HADOOP-111361-003.patch, HADOOP-11361-002.patch, HADOOP-11361-004.patch,
HADOOP-11361-005.patch, HADOOP-11361-005.patch, HADOOP-11361-006.patch, HADOOP-11361-007.patch,
HADOOP-11361-009.patch, HADOOP-11361.008.patch, HADOOP-11361.patch, HDFS-7487.patch
>
>
> {noformat}
> Caused by: java.lang.NullPointerException
> 	at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.updateAttrCache(MetricsSourceAdapter.java:247)
> 	at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.updateJmxCache(MetricsSourceAdapter.java:177)
> 	at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.getAttribute(MetricsSourceAdapter.java:102)
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:647)
> {noformat}



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