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https://issues.apache.org/jira/browse/HBASE-21266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16647107#comment-16647107
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Andrew Purtell edited comment on HBASE-21266 at 10/11/18 10:22 PM:
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TestZKLessSplitOnCluster.testSSHCleanupDaugtherRegionsOfAbortedSplit does
hand-rolled waits with 10 ms sleeps. Rewrote those to use Waiter#waitFor with
the same timeout and period values of other uses of Waiter#waitFor in this
unit.
TestEndToEndSplitTransaction.testFromClientSideWhileSplitting utilizes a chore
named RegionChecker also with a 10 ms interval, increasing this to 100. This
isn't necessary beyond the fact that sleep(10) is obnoxious. Might as well just
be a yield() or a spin-wait. There are three instances of sleep(10) in this
unit, changed to sleep(100) which IMHO is the smallest reasonable value you
want to use if doing short waits.
was (Author: apurtell):
TestZKLessSplitOnCluster.testSSHCleanupDaugtherRegionsOfAbortedSplit does
hand-rolled waits with 10 ms sleeps. Rewrote those to use Waiter#waitFor with
the same timeout and period values of other uses of Waiter#waitFor in this
unit.
TestEndToEndSplitTransaction.testFromClientSideWhileSplitting utilizes a chore
named RegionChecker also with a 10 ms interval, increasing this to 100. This
isn't necessary beyond the fact that sleep(10) is obnoxious. Might as well just
be a yield() or a spin-wait.
> 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
>
>
> 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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