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HDFS-7685. Document dfs.namenode.heartbeat.recheck-interval in hdfs-default.xml. Contributed by Kai Sasaki.

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Akira Ajisaka 2015-02-27 12:17:34 -08:00
parent 01a1621930
commit 8719cdd4f6
2 changed files with 14 additions and 0 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -685,6 +685,9 @@ Release 2.7.0 - UNRELEASED
HDFS-7308. Change the packet chunk size computation in DFSOutputStream in
order to enforce packet size <= 64kB. (Takuya Fukudome via szetszwo)
HDFS-7685. Document dfs.namenode.heartbeat.recheck-interval in
hdfs-default.xml. (Kai Sasaki via aajisaka)
OPTIMIZATIONS
HDFS-7454. Reduce memory footprint for AclEntries in NameNode.

11
hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
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@ -144,6 +144,17 @@
</description>
</property>
<property>
<name>dfs.namenode.heartbeat.recheck-interval</name>
<value>300000</value>
<description>
This time decides the interval to check for expired datanodes.
With this value and dfs.heartbeat.interval, the interval of
deciding the datanode is stale or not is also calculated.
The unit of this configuration is millisecond.
</description>
</property>
<property>
<name>dfs.http.policy</name>
<value>HTTP_ONLY</value>