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https://issues.apache.org/jira/browse/HBASE-4703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13141772#comment-13141772
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stack commented on HBASE-4703:
------------------------------
If '(client = 28, server = 29)' is not an issue in your environment, some rpc
version setting got messed up (Trying it here).
Are you saying that we are stuck at:
{code}
...
org.apache.hadoop.hbase.util.Threads.threadDumpingIsAlive(Threads.java:113)
{code}
... and we never let go? That'd be be strange (would explain why builds hang
on jenkins sometimes though). Isn't this joined on another thread? Whats the
other thread doing?
That stack trace is horrid to look at. Can you make sense of it? Whats it
stuck on?
> Improvements in tests
> ---------------------
>
> Key: HBASE-4703
> URL: https://issues.apache.org/jira/browse/HBASE-4703
> Project: HBase
> Issue Type: Improvement
> Components: test
> Affects Versions: 0.92.0
> Environment: all
> Reporter: nkeywal
> Assignee: nkeywal
> Priority: Minor
> Fix For: 0.92.0
>
> Attachments: 20111030_4703_all.patch, 20111030_4703_all.v2.patch,
> 20111030_4703_all.v3.patch, 20111030_4703_all.v4.patch
>
>
> Global:
> - when possible, make the test using the default cluster configuration for
> the number of region (1 instead of 2 or 3). This allows a faster stop/start,
> and is a step toward a shared cluster configuration.
> - 'sleep': lower or remove the sleep based synchronisation in the tests (in
> HBaseTestingUtility, TestGlobalMemStoreSize, TestAdmin,
> TestCoprocessorEndpoint, TestHFileOutputFormat, TestLruBlockCache,
> TestServerCustomProtocol, TestReplicationSink)
> - Optimize 'put' by setting setWriteToWAL to false, when the 'put' is big
> or in a loop. Not done for tests that rely on the WAL.
>
> Local issues:
> - TestTableInputFormatScan fully deletes the hadoop.tmp.dir directory on
> tearDown, that makes it impossible to use in // with another test using this
> directory
> - TestIdLock logs too much (9000 lines per seconds). Test time lowered to 15
> seconds to make it a part of the small subset
> - TestMemoryBoundedLogMessageBuffer useless System.out.println
> - io.hfile.TestReseekTo useless System.out.println
> - TestTableInputFormat does not shutdown the cluster
> - testGlobalMemStore does not shutdown the cluster
> - rest.client.TestRemoteAdmin: simplified, does not use local admin, single
> test instead of two.
> - HBaseTestingUtility#ensureSomeRegionServersAvailable starts only one
> server, should start the number of missing server instead.
> - TestMergeTool should starts/stops the dfs cluster with HBaseTestingUtility
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