Raju Balpande created HDFS-17809:
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Summary: hdfs diskbalancer -help plan or other commands are not
giving correct explanation in hadoop version 3.4.1
Key: HDFS-17809
URL: https://issues.apache.org/jira/browse/HDFS-17809
Project: Hadoop HDFS
Issue Type: Bug
Components: diskbalancer
Affects Versions: 3.4.1
Reporter: Raju Balpande
For HDFS with hadoop version 3.4.1, facing problem in help for diskbalancer
commands.
{code:java}
[[email protected] ~]# hdfs diskbalancer -help query
usage: hdfs diskbalancer [command] [options]DiskBalancer distributes data
evenly between different disks on a
datanode. DiskBalancer operates by generating a plan, that tells datanode
how to move data between disks. Users can execute a plan by submitting it
to the datanode.
To get specific help on a particular command please run hdfs diskbalancer -help
<command>.
--help valid commands are plan | execute | query | cancel | report {code}
I tried similar for all the commands l{*}ike plan, execute, report{*} and
getting same response as if it is ignoring any text after help. Also tried with
*--help* as well.
{code:java}
[[email protected] ~]# hdfs diskbalancer --help execute
usage: hdfs diskbalancer [command] [options]DiskBalancer distributes data
evenly between different disks on a
datanode. DiskBalancer operates by generating a plan, that tells datanode
how to move data between disks. Users can execute a plan by submitting it
to the datanode.
To get specific help on a particular command please run hdfs diskbalancer -help
<command>.
--help valid commands are plan | execute | query | cancel | report {code}
Whereas the same commands works fine in *Hadoop version 3.1.1*
{code:java}
[[email protected] ~]# hdfs diskbalancer -help query
usage: hdfs diskbalancer -query <hostname> [options]
Query Plan queries a given data node about the current state of disk
balancer execution.
--query <arg> Queries the disk balancer status of a given datanode.
--v Prints details of the plan that is being executed on
the node.Query command retrievs the plan ID and the current
running state. {code}
Can someone please look into this.
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