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HDFS-4227. Document dfs.namenode.resource.* (Daisuke Kobayashi via aw)

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Allen Wittenauer 2014-09-29 09:01:43 -07:00
parent 9829f9fa58
commit 84b9c632bf
2 changed files with 40 additions and 0 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -981,6 +981,8 @@ Release 2.6.0 - UNRELEASED
HDFS-6664. HDFS permissions guide documentation states incorrect default
group mapping class. (Ray Chiang via aw)
HDFS-4227. Document dfs.namenode.resource.* (Daisuke Kobayashi via aw)
Release 2.5.1 - 2014-09-05
INCOMPATIBLE CHANGES

38
hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
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@ -633,6 +633,44 @@
</description>
</property>
<property>
<name>dfs.namenode.resource.check.interval</name>
<value>5000</value>
<description>
The interval in milliseconds at which the NameNode resource checker runs.
The checker calculates the number of the NameNode storage volumes whose
available spaces are more than dfs.namenode.resource.du.reserved, and
enters safemode if the number becomes lower than the minimum value
specified by dfs.namenode.resource.checked.volumes.minimum.
</description>
</property>
<property>
<name>dfs.namenode.resource.du.reserved</name>
<value>104857600</value>
<description>
The amount of space to reserve/require for a NameNode storage directory
in bytes. The default is 100MB.
</description>
</property>
<property>
<name>dfs.namenode.resource.checked.volumes</name>
<value></value>
<description>
A list of local directories for the NameNode resource checker to check in
addition to the local edits directories.
</description>
</property>
<property>
<name>dfs.namenode.resource.checked.volumes.minimum</name>
<value>1</value>
<description>
The minimum number of redundant NameNode storage volumes required.
</description>
</property>
<property>
<name>dfs.datanode.balance.bandwidthPerSec</name>
<value>1048576</value>