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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14614) Procedure v2: Core Assignment Manager
Date Wed, 12 Apr 2017 18:53:41 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15966394#comment-15966394
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stack commented on HBASE-14614:
-------------------------------

Ok. All these tests pass locally. There is an outstanding issue where we trip a stuck region
assign. It is hard to reproduce. It currently is in the way of my getting a good run up on
a cluster. This could explain some of the failures seen here. Will keep working on it.

Meantime, let me work on trying to cut up this patch into smaller pieces. Will need reviews
on core. Let me also work on doc. and description of what this patch contains. The current
changeset  comment has gone stale.

> Procedure v2: Core Assignment Manager
> -------------------------------------
>
>                 Key: HBASE-14614
>                 URL: https://issues.apache.org/jira/browse/HBASE-14614
>             Project: HBase
>          Issue Type: Sub-task
>          Components: proc-v2
>    Affects Versions: 2.0.0
>            Reporter: Stephen Yuan Jiang
>            Assignee: Matteo Bertozzi
>             Fix For: 2.0.0
>
>         Attachments: HBASE-14614.master.003.patch, HBASE-14614.master.004.patch, HBASE-14614.master.005.patch,
HBASE-14614.master.006.patch, HBASE-14614.master.007.patch, HBASE-14614.master.008.patch,
HBASE-14614.master.009.patch, HBASE-14614.master.010.patch, HBASE-14614.master.011.patch,
HBASE-14614.master.012.patch, HBASE-14614.master.012.patch, HBASE-14614.master.013.patch,
HBASE-14614.master.014.patch, HBASE-14614.master.015.patch, HBASE-14614.master.017.patch,
HBASE-14614.master.018.patch, HBASE-14614.master.019.patch, HBASE-14614.master.020.patch,
HBASE-14614.master.021.patch, HBASE-14614.master.022.patch, HBASE-14614.master.023.patch,
HBASE-14614.master.024.patch, HBASE-14614.master.025.patch, HBASE-14614.master.026.patch,
HBASE-14614.master.027.patch, HBASE-14614.master.028.patch, HBASE-14614.master.029.patch,
HBASE-14614.master.030.patch, HBASE-14614.master.031.patch, HBASE-14614.master.032.patch,
HBASE-14614.master.033.patch, HBASE-14614.master.034.patch
>
>
> New AssignmentManager implemented using proc-v2.
>  - AssignProcedure handle assignment operation
>  - UnassignProcedure handle unassign operation
>  - MoveRegionProcedure handle move/balance operation
> Concurrent Assign operations are batched together and sent to the balancer
> Concurrent Assign and Unassign operation ready to be sent to the RS are batched together
> This patch is an intermediate state where we add the new AM as AssignmentManager2() to
the master, to be reached by tests. but the new AM will not be integrated with the rest of
the system. Only new am unit-tests will exercise the new assigment manager. The integration
with the master code is part of HBASE-14616



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