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HDFS-17794 Documentation for dfs.datanode.synconclose #7715

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Original file line number Diff line number Diff line change
Expand Up @@ -1779,6 +1779,21 @@
</description>
</property>

<property>
<name>dfs.datanode.synconclose</name>
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Add dfs.datanode.socket.reuse.keepalive alse ?

<value>false</value>
<description>
If this configuration is enabled, the datanode will instruct the
operating system to sync data block files contents to disk when the
blockfile is closed.

This has the benefit of ensuring that data is written to disk
immeditately when a block is closed, avoiding the data being held
in the operating system cache. This can help data loss in the event
of a malfunction such as a power failure.
</description>
</property>

<property>
<name>dfs.client.failover.max.attempts</name>
<value>15</value>
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