fsck command can display usage if user passes any other arguments with '-' (
other than -move, -delete, -files , -openforwrite, -blocks , -locations,
-racks).
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Key: HDFS-1727
URL: https://issues.apache.org/jira/browse/HDFS-1727
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Uma Maheswara Rao G
Priority: Minor
In fsck command if user passes the arguments like
./hadoop fsck -test -files -blocks -racks
In this case it will take / and will display whole DFS information regarding
to files,blocks,racks.
But here, we are hiding the user mistake. Instead of this, we can display the
usage if user passes any invalid argument like above.
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