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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5140) Too many safemode monitor threads being created in the standby namenode causing it to fail with out of memory error
Date Fri, 30 Aug 2013 00:01:52 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5140?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jing Zhao updated HDFS-5140:
----------------------------

    Attachment: HDFS-5140.002.patch

Update the patch to address Suresh's comment.
                
> Too many safemode monitor threads being created in the standby namenode causing it to
fail with out of memory error
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-5140
>                 URL: https://issues.apache.org/jira/browse/HDFS-5140
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha
>    Affects Versions: 2.1.0-beta
>            Reporter: Arpit Gupta
>            Assignee: Jing Zhao
>            Priority: Blocker
>         Attachments: HDFS-5140.001.patch, HDFS-5140.002.patch
>
>
> While running namenode load generator with 100 threads for 10 mins namenode was being
failed over ever 2 mins.
> The standby namenode shut itself down as it ran out of memory and was not able to create
another thread.
> When we searched for 'Safe mode extension entered' in the standby log it was present
55000+ times

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