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https://issues.apache.org/jira/browse/HBASE-20401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16550223#comment-16550223
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Tak Lon (Stephen) Wu commented on HBASE-20401:
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[~reidchan] thanks for catching theĀ {{Dynamic Configuration}} in the book 
chapter and it's been updated. RN has been updated based on your suggestion, 
and sorry that It's my first time writing the RN that may be too nerdy (will 
try to improve it over timeĀ :))

> Make `MAX_WAIT` and `waitIfNotFinished` in CleanerContext configurable
> ----------------------------------------------------------------------
>
>                 Key: HBASE-20401
>                 URL: https://issues.apache.org/jira/browse/HBASE-20401
>             Project: HBase
>          Issue Type: Improvement
>          Components: master
>    Affects Versions: 3.0.0, 1.5.0, 2.0.0-beta-1, 1.4.4, 2.0.0
>            Reporter: Tak Lon (Stephen) Wu
>            Assignee: Tak Lon (Stephen) Wu
>            Priority: Minor
>              Labels: beginner
>         Attachments: HBASE-20401.branch-1.001.patch, 
> HBASE-20401.master.001.patch, HBASE-20401.master.002.patch, 
> HBASE-20401.master.003.patch, HBASE-20401.master.004.patch, 
> HBASE-20401.master.005.patch, HBASE-20401.master.006.patch
>
>
> When backporting HBASE-18309 in HBASE-20352, the deleteFiles calls 
> CleanerContext.java#getResult with a waitIfNotFinished timeout to wait for 
> notification (notify) from the fs.delete file thread. there might be two 
> situation need to tune the MAX_WAIT in CleanerContext or waitIfNotFinished 
> when LogClearner call getResult.
>  # fs.delete never complete (strange but possible), then we need to wait for 
> a max of 60 seconds. here, 60 seconds might be too long
>  # getResult is waiting in the period of 500 milliseconds, but the fs.delete 
> has completed and setFromClear is set but yet notify(). one might want to 
> tune this 500 milliseconds to 200 or less .



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