Anu Engineer created HDFS-9720:
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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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