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From "Patrick Angeles (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1596) Move secondary namenode checkpoint configs from core-default.xml to hdfs-default.xml
Date Tue, 25 Jan 2011 17:48:44 GMT
Move secondary namenode checkpoint configs from core-default.xml to hdfs-default.xml
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                 Key: HDFS-1596
                 URL: https://issues.apache.org/jira/browse/HDFS-1596
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: name-node
            Reporter: Patrick Angeles


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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