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https://issues.apache.org/jira/browse/HDFS-16549?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yuanbo Liu updated HDFS-16549:
------------------------------
    Description: 
It's great to see the implement of fine-grain lock for DN has been committed 
into trunk. 

FsDatasetImpl.invalidate is a frequent method to response the delete command 
from NN. How about using volume-level write lock instead of pool-level write 
lock to reduce the cost of write lock.

cc: [~hexiaoqiao]  [~Aiphag0] . 
Thanks for your great work!

  was:
It's great to see the implement of fine-grain lock for DN has been committed 
into trunk. 

FsDatasetImpl.invalidate is a frequent method to response the delete command 
from NN. How about using volume-level write lock instead of pool-level write 
lock to reduce the cost of write lock.

cc: [~hexiaoqiao]  [~Aiphag0] . 
Thanks for your great work!
h4. [Mingxiang 
Li|https://issues.apache.org/jira/secure/ViewProfile.jspa?name=Aiphag0]


> Consider using volume level lock for deleting blocks
> ----------------------------------------------------
>
>                 Key: HDFS-16549
>                 URL: https://issues.apache.org/jira/browse/HDFS-16549
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Yuanbo Liu
>            Priority: Major
>
> It's great to see the implement of fine-grain lock for DN has been committed 
> into trunk. 
> FsDatasetImpl.invalidate is a frequent method to response the delete command 
> from NN. How about using volume-level write lock instead of pool-level write 
> lock to reduce the cost of write lock.
> cc: [~hexiaoqiao]  [~Aiphag0] . 
> Thanks for your great work!



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