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From "Harsh J Chouraria (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1596) Move secondary namenode checkpoint configs from core-default.xml to hdfs-default.xml
Date Wed, 16 Mar 2011 19:21:29 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1596?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13007638#comment-13007638
] 

Harsh J Chouraria commented on HDFS-1596:
-----------------------------------------

Great!

Could you also have a look at HADOOP-7117? Thank you! :)

> Move secondary namenode checkpoint configs from core-default.xml to hdfs-default.xml
> ------------------------------------------------------------------------------------
>
>                 Key: HDFS-1596
>                 URL: https://issues.apache.org/jira/browse/HDFS-1596
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: documentation, name-node
>            Reporter: Patrick Angeles
>            Assignee: Harsh J Chouraria
>             Fix For: 0.21.1, 0.22.0, 0.23.0
>
>         Attachments: HDFS-7117.r1.diff, HDFS-7117.r2.diff
>
>
> The following configs are in core-default.xml, but are really read by the Secondary Namenode.
These should be moved to hdfs-default.xml for consistency.
> <property>
>   <name>fs.checkpoint.dir</name>
>   <value>${hadoop.tmp.dir}/dfs/namesecondary</value>
>   <description>Determines where on the local filesystem the DFS secondary
>       name node should store the temporary images to merge.
>       If this is a comma-delimited list of directories then the image is
>       replicated in all of the directories for redundancy.
>   </description>
> </property>
> <property>
>   <name>fs.checkpoint.edits.dir</name>
>   <value>${fs.checkpoint.dir}</value>
>   <description>Determines where on the local filesystem the DFS secondary
>       name node should store the temporary edits to merge.
>       If this is a comma-delimited list of directoires then teh edits is
>       replicated in all of the directoires for redundancy.
>       Default value is same as fs.checkpoint.dir
>   </description>
> </property>
> <property>
>   <name>fs.checkpoint.period</name>
>   <value>3600</value>
>   <description>The number of seconds between two periodic checkpoints.
>   </description>
> </property>
> <property>
>   <name>fs.checkpoint.size</name>
>   <value>67108864</value>
>   <description>The size of the current edit log (in bytes) that triggers
>        a periodic checkpoint even if the fs.checkpoint.period hasn't expired.
>   </description>
> </property>

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