[jira] [Commented] (HDFS-17387) [FGL] Abstract selectable locking mode

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDFS-17387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17819499#comment-17819499 ] 

ASF GitHub Bot commented on HDFS-17387:
---------------------------------------

ZanderXu opened a new pull request, #6572:
URL: https://github.com/apache/hadoop/pull/6572

   Splitting the current global FNS lock into FSLock and BMLock. 
   
   Abstract these lock mode and make them selectable, so that end-user can choose to use global lock or fine-grained lock through configuration.




> [FGL] Abstract selectable locking mode
> --------------------------------------
>
>                 Key: HDFS-17387
>                 URL: https://issues.apache.org/jira/browse/HDFS-17387
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: ZanderXu
>            Assignee: ZanderXu
>            Priority: Major
>
> Abstract a lock mode to cover the current global lock and the new fine-grained lock(global FS lock and global BM lock).
> End-user can select to use lock mode through configuration.
> The possible lock modes after this patch are as follows:
>  * GLOBAL Lock
>  * FS Lock
>  * BM Lock



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