usharani created HDFS-12716:
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Summary: 'dfs.datanode.failed.volumes.tolerated' to support
minimum number of volumes to be available
Key: HDFS-12716
URL: https://issues.apache.org/jira/browse/HDFS-12716
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode
Reporter: usharani
Currently 'dfs.datanode.failed.volumes.tolerated' supports number of
tolerated failed volumes to be mentioned. This configuration change requires
restart of datanode. Since datanode volumes can be changed dynamically, keeping
this configuration same for all may not be good idea.
Support 'dfs.datanode.failed.volumes.tolerated' to accept special 'negative
value 'x' to tolerate failures of upto "n-x"
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