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https://issues.apache.org/jira/browse/HBASE-8306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13650818#comment-13650818
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Ted Yu commented on HBASE-8306:
-------------------------------
TestZooKeeper hung in the test run
(https://builds.apache.org/job/PreCommit-HBASE-Build/5573/console):
{code}
"pool-1-thread-1" prio=10 tid=0x088a7000 nid=0x26d0 in Object.wait()
[0x775d3000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
at org.apache.hadoop.hbase.util.Sleeper.sleep(Sleeper.java:94)
- locked <0x7f8a5748> (a java.lang.Object)
at org.apache.hadoop.hbase.util.Sleeper.sleep(Sleeper.java:58)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.waitForServerOnline(HRegionServer.java:1610)
at
org.apache.hadoop.hbase.util.JVMClusterUtil$RegionServerThread.waitForServerOnline(JVMClusterUtil.java:69)
at
org.apache.hadoop.hbase.MiniHBaseCluster.startRegionServer(MiniHBaseCluster.java:297)
at
org.apache.hadoop.hbase.HBaseTestingUtility.ensureSomeRegionServersAvailable(HBaseTestingUtility.java:2089)
at org.apache.hadoop.hbase.TestZooKeeper.setUp(TestZooKeeper.java:106)
{code}
TestJoinedScanners passed.
> Enhance TestJoinedScanners with ability to simulate more scenarios
> ------------------------------------------------------------------
>
> Key: HBASE-8306
> URL: https://issues.apache.org/jira/browse/HBASE-8306
> Project: HBase
> Issue Type: Test
> Reporter: Ted Yu
> Assignee: Ted Yu
> Priority: Minor
> Attachments: 8306-v1.txt, 8306-v5.txt, 8306-v6.txt, 8306-v7.txt,
> 8306-v7.txt
>
>
> Currently TestJoinedScanners uses fixed lengths of values for essential and
> non-essential column families.
> The selection rate of SingleColumnValueFilter is fixed and distribution of
> selected rows forms stripes.
> TestJoinedScanners can be enhanced in the following ways:
> 1. main() can be introduced so that the test can be run standalone
> 2. selection ratio can be specified by user
> 3. distribution of selected rows should be random
> 4. user should be able to specify data block encoding for the column families
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