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https://issues.apache.org/jira/browse/HBASE-14614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15999290#comment-15999290
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stack commented on HBASE-14614:
-------------------------------
Pushed a fix for case where a move procedure starts and then a split arrives in
between the move unassign and move assign (kept lock for life of the move).
Also added some extra debug around state changes when a server crash procedure
finds a RIT.
Two hour 2.5B ITBLL w/ Monkeys tests completing about half the time now up on
small cluster (cluster and ITBLL w/ monkeys is good for finding probs in
assign).
Currently, chasing corruption issue (it hasn't shown up in a while) and a few
issues around ServerCrashProcedure when it finds a region in transition; some
how state is not as expected so have logging in place to see if I can spot
where state is getting changed in background.
> 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, HBASE-14614.master.035.patch,
> HBASE-14614.master.036.patch, HBASE-14614.master.037.patch,
> HBASE-14614.master.038.patch, HBASE-14614.master.039.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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