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https://issues.apache.org/jira/browse/HBASE-21266?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell updated HBASE-21266:
-----------------------------------
    Status: Patch Available  (was: Open)

> Not running balancer because processing dead regionservers, but empty dead rs 
> list
> ----------------------------------------------------------------------------------
>
>                 Key: HBASE-21266
>                 URL: https://issues.apache.org/jira/browse/HBASE-21266
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 1.4.8
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Major
>             Fix For: 1.5.0, 1.4.9
>
>         Attachments: HBASE-21266-branch-1.patch, HBASE-21266-branch-1.patch, 
> HBASE-21266-branch-1.patch, HBASE-21266-branch-1.patch, 
> HBASE-21266-branch-1.patch, HBASE-21266-branch-1.patch, 
> HBASE-21266-branch-1.patch, HBASE-21266-branch-1.patch, 
> HBASE-21266-branch-1.patch, HBASE-21266-branch-1.patch, 
> HBASE-21266-branch-1.patch
>
>
> Found during ITBLL testing. AM in master gets into a state where manual 
> attempts from the shell to run the balancer always return false and this is 
> printed in the master log:
> 2018-10-03 19:17:14,892 DEBUG 
> [RpcServer.default.FPBQ.Fifo.handler=21,queue=0,port=8100] master.HMaster: 
> Not running balancer because processing dead regionserver(s): 
> Note the empty list. 
> This errant state did not recover without intervention by way of master 
> restart, but the test environment was chaotic so needs investigation.



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