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HDFS-5926 Documentation should clarify dfs.datanode.du.reserved impact from reserved disk capacity (Gabor Bota)

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Aaron Fabbri 2018-05-04 16:37:47 -07:00
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hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
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@ -349,6 +349,9 @@
For example, reserved space for RAM_DISK storage can be configured using property For example, reserved space for RAM_DISK storage can be configured using property
'dfs.datanode.du.reserved.ram_disk'. If specific storage type reservation is not configured 'dfs.datanode.du.reserved.ram_disk'. If specific storage type reservation is not configured
then dfs.datanode.du.reserved will be used. then dfs.datanode.du.reserved will be used.
Note: In case of using tune2fs to set reserved-blocks-percentage, or other filesystem tools,
then you can possibly run into out of disk errors because hadoop will not check those
external tool configurations.
</description> </description>
</property> </property>