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https://issues.apache.org/jira/browse/HDFS-15793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17286295#comment-17286295
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Yang Yun commented on HDFS-15793:
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Thanks [~ayushtkn] for your review.
Sorry for the last patch lost some functions, updated to HDFS-15793.002.patch
with following changes,
* Add logical to process comand 'DNA_BALANCERBANDWIDTHUPDATE' in
BPOfferService and call updateBalancerMaxConcurrentMovers of DataXceiverServer
to make change thread bother smoothly.
* Add more test to check all datanode or call '-getBalancerMaxThreads' to make
sure that actaully the threads increased/decreased.
* Fix the bug in router code and add a test for Router.
> Add command to DFSAdmin for Balancer max concurrent threads
> ------------------------------------------------------------
>
> Key: HDFS-15793
> URL: https://issues.apache.org/jira/browse/HDFS-15793
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: balancer & mover
> Reporter: Yang Yun
> Assignee: Yang Yun
> Priority: Minor
> Attachments: HDFS-15793.001.patch, HDFS-15793.002.patch
>
>
> We have DFSAdmin command '-setBalancerBandwidth' to dynamically change the
> max number of bytes per second of network bandwidth to be used by a datanode
> during balancing. Also add '-setBalancerMaxThreads' to dynamically change
> the balancer maxThread number which may be used concurrently for moving
> blocks.
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