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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HDFS-1112) Edit log buffer should not grow unboundedly
Date Fri, 30 Apr 2010 23:22:22 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hairong Kuang reassigned HDFS-1112:
-----------------------------------

    Assignee: Hairong Kuang

> Edit log buffer should not grow unboundedly
> -------------------------------------------
>
>                 Key: HDFS-1112
>                 URL: https://issues.apache.org/jira/browse/HDFS-1112
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.22.0
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: 0.22.0
>
>
> Currently HDFS does not impose an upper limit on the edit log buffer. In case there are
a large number of open operations coming in with access time update on, since open does not
call sync automatically, there is a possibility that the buffer grow to a large size, therefore
causes memory leak and full GC in extreme cases as described in HDFS-1104. 
> The edit log buffer should be automatically flushed when the buffer becomes full.

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