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From "Anu Engineer (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-9720) DiskBalancer : Add configuration parameters
Date Thu, 28 Jan 2016 22:49:40 GMT
Anu Engineer created HDFS-9720:

             Summary: DiskBalancer : Add configuration parameters
                 Key: HDFS-9720
                 URL: https://issues.apache.org/jira/browse/HDFS-9720
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: balancer & mover
    Affects Versions: HDFS-1312
            Reporter: Anu Engineer
            Assignee: Anu Engineer
             Fix For: HDFS-1312

Add the following config params:

# Max Disk Throughput - This allows users to control how much disk I/O is generated while
disk balancer is running
# Max Disk Errors - For each move operation, this allows user to specify how many I/O failures
are tolerated before we declare the operation as failed.
#Block Tolerance - Specifies how much movement of data is good enough. since the datanodes
are active while the copy is going on, tolerance lets the user specify that if we reached
something like 5% of projected Ideal storage on the destination disk, we can consider that
move to be successful.

Each of this parameter can be specified for each MoveStep or if not specified the config parameters
are used.

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