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https://issues.apache.org/jira/browse/HDFS-17387?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hui Fei updated HDFS-17387:
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    Summary: [FGL] Abstract the configurable locking mode  (was: [FGL] Abstract 
selectable locking mode)

> [FGL] Abstract the configurable 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
>              Labels: pull-request-available
>
> 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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