[jira] [Commented] (HBASE-6478) TestClassLoading.testClassLoadingFromLibDirInJar occasionally fails

["Andrew Purtell (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-6478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13433595#comment-13433595 ] 

Andrew Purtell commented on HBASE-6478:
---------------------------------------

It's not enough just to wait for the table to be enabled. Still seeing failures after running many times. It looks like a simple sleep, after testing for enabled state, to give the CPs time to load, is sufficient to get this test passing. Will put up a v4 patch if it can pass 100 tests consecutively.
                
> TestClassLoading.testClassLoadingFromLibDirInJar occasionally fails
> -------------------------------------------------------------------
>
>                 Key: HBASE-6478
>                 URL: https://issues.apache.org/jira/browse/HBASE-6478
>             Project: HBase
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 0.94.0
>            Reporter: zhou wenjian
>             Fix For: 0.96.0, 0.94.2
>
>         Attachments: HBASE-6478-trunk.patch, HBASE-6478-trunk-v2.patch, HBASE-6478-trunk-v3.patch
>
>
> When hudson runs for HBASE-6459, it encounters a failed testcase in org.apache.hadoop.hbase.coprocessor.TestClassLoading.testClassLoadingFromLibDirInJar. The link is https://builds.apache.org/job/PreCommit-HBASE-Build/2455/testReport/org.apache.hadoop.hbase.coprocessor/TestClassLoading/testClassLoadingFromLibDirInJar/
> I check the log, and find that the function waitTableAvailable will only check the meta table, when rs open the region and update the metalocation in meta, it may not be added to the onlineregions in rs.
> for (HRegion region:
>         hbase.getRegionServer(0).getOnlineRegionsLocalContext()) {
> this Loop will ship, and found1 will be false altogether.
> that's why the testcase failed.
> So maybe we can  hbave some strictly check when table is created

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