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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17788) Procedure V2 performance improvements
Date Fri, 24 Mar 2017 17:28:42 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15940783#comment-15940783
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stack commented on HBASE-17788:
-------------------------------

Fantastic [~gubjanos] Thanks for the help. 

Make yourself an issue and link it here.  I added you as a contributor so you should be able
to hack around in JIRA.

bq. Just to clarify, is this about the WorkerThreads in ProcedureExecutor.java? Because the
construction there is somewhat similar to a ThreadPool Executor.

That is my understanding. They run the procedures.  What you thinking? Replace w/ ThreadPool
Executor? That sounds good. There is means of monitoring for stuck threads/procedures. We
need that. Reporting on what is stuck could be better; IIRC, it just says 'stuck' w/o saying
which procedure is stopped.

Thanks again.



> Procedure V2 performance improvements
> -------------------------------------
>
>                 Key: HBASE-17788
>                 URL: https://issues.apache.org/jira/browse/HBASE-17788
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Performance, proc-v2
>            Reporter: stack
>             Fix For: 2.0.0
>
>
> This is a list of items to work on to improve framework perf taken from https://docs.google.com/document/d/1kEWzyA0iCyRjdogjju9JNMDT9ODHaKcyoAJTMXkDpxc/edit#
Make sub-issues to work on each in the list below:
>  * Replace fixed Executor Threads with dynamic thread pool (Easy)
>  * Connect the active thread count with the ProcStore slots (Medium)
>  * Parallelize the load (Complex)
>  * Allow Procedures to start early (Complex) https://github.com/apache/hbase/blob/master/hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/store/wal/ProcedureWALFormatReader.java#L155



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