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From "Ted Yu (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4703) Improvements in tests
Date Sun, 30 Oct 2011 21:00:32 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13139763#comment-13139763

Ted Yu commented on HBASE-4703:

bq. 'sleep': lower or remove the sleep based synchronisation in the tests (in HBaseTestingUtility
I am not sure if we can remove sleep based synchronisation.
As the analysis in HBASE-4690 showed, the timing of operations in cluster for different hardware
/ OS combinations would be different.
I guess we don't want to make test code too complicated so that test code can be perfectly
synchronous with minicluster.
> 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
>         Attachments: 20111030_4703_all.patch, 20111030_4703_all.v2.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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