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https://issues.apache.org/jira/browse/HBASE-7468?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13552542#comment-13552542
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ramkrishna.s.vasudevan commented on HBASE-7468:
-----------------------------------------------
Ideally the nodeChildrenChange event iterates thro the list of new znodes on
the /hbase/assignment nodes. And then creates a watcher on that. One reason
could be there are more than one znode and so the watch setting operation takes
time. The order of execution is different when we try running from eclipse and
when we run mvn tests.
My conclusion is that the testcase actually reveals the problem but the same
can happen in any case where the SPLITTING event can get missed out. May be
some of the SPLIT related bugs that were raised is due to this? Need to analyse.
Any suggestions welcome. We should ensure that the transition from SPLITTING
to SPLITTING should happen only after the master has set the watch on the znode
and we should be sure of that.
> TestSplitTransactionOnCluster hangs frequently
> ----------------------------------------------
>
> Key: HBASE-7468
> URL: https://issues.apache.org/jira/browse/HBASE-7468
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.94.3
> Reporter: Lars Hofhansl
> Assignee: ramkrishna.s.vasudevan
> Fix For: 0.94.5
>
> Attachments: 7468-0.94.txt, 7468-0.94-v2.txt, 7468-0.94-v4.txt,
> 7468-jstack.txt, 7468-output.zip, HBASE-7468v3.patch,
> TEST-org.apache.hadoop.hbase.regionserver.TestSplitTransactionOnCluster.xml,
> TEST-org.apache.hadoop.hbase.regionserver.TestSplitTransactionOnCluster.xml,
> TEST-org.apache.hadoop.hbase.regionserver.TestSplitTransactionOnCluster.xml,
> TestSplitTransactionOnCluster-jstack.txt
>
>
> This what I saw once in a local build.
> {code}
> java.lang.Thread.State: TIMED_WAITING (sleeping)
> at java.lang.Thread.sleep(Native Method)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin.disableTable(HBaseAdmin.java:831)
> at
> org.apache.hadoop.hbase.regionserver.TestSplitTransactionOnCluster.testShouldClearRITWhenNodeFoundInSplittingState(TestSplitTransactionOnCluster.java:650)
> {code}
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