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From "Vinitha Reddy Gankidi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10733) NameNode terminated after full GC thinking QJM is unresponsive.
Date Wed, 11 Jan 2017 00:56:59 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vinitha Reddy Gankidi updated HDFS-10733:
-----------------------------------------
    Attachment: HDFS-10733.002.patch

> NameNode terminated after full GC thinking QJM is unresponsive.
> ---------------------------------------------------------------
>
>                 Key: HDFS-10733
>                 URL: https://issues.apache.org/jira/browse/HDFS-10733
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode, qjm
>    Affects Versions: 2.6.4
>            Reporter: Konstantin Shvachko
>            Assignee: Vinitha Reddy Gankidi
>         Attachments: HDFS-10733.001.patch, HDFS-10733.002.patch
>
>
> NameNode went into full GC while in {{AsyncLoggerSet.waitForWriteQuorum()}}. After completing
GC it checks if the timeout for quorum is reached. If the GC was long enough the timeout can
expire, and {{QuorumCall.waitFor()}} will throw {{TimeoutExcpetion}}. Finally {{FSEditLog.logSync()}}
catches the exception and terminates NameNode.



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