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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6403) Add metrics for log warnings reported by JVM pauses
Date Fri, 20 Jun 2014 11:29:29 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14038706#comment-14038706
] 

Hudson commented on HDFS-6403:
------------------------------

SUCCESS: Integrated in Hadoop-Yarn-trunk #589 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/589/])
HDFS-6403. Add metrics for log warnings reported by JVM pauses. Contributed by Yongjun Zhang.
(atm: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1604074)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/source/JvmMetrics.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/source/JvmMetricsInfo.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/JvmPauseMonitor.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/site/apt/Metrics.apt.vm
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/metrics2/source/TestJvmMetrics.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/metrics/DataNodeMetrics.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/metrics/NameNodeMetrics.java


> Add metrics for log warnings reported by JVM pauses
> ---------------------------------------------------
>
>                 Key: HDFS-6403
>                 URL: https://issues.apache.org/jira/browse/HDFS-6403
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode, namenode
>    Affects Versions: 2.4.0
>            Reporter: Yongjun Zhang
>            Assignee: Yongjun Zhang
>             Fix For: 2.5.0
>
>         Attachments: HDFS-6403.001.patch, HDFS-6403.002.patch, HDFS-6403.003.patch, HDFS-6403.004.patch,
HDFS-6403.005.patch
>
>
> HADOOP-9618 logs warnings when there are long GC pauses. If this is exposed as a metric,
then they can be monitored.



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