Jeffrey Zhong created HBASE-8169:
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Summary: TestMaster#testMasterFailoverWithMockedRITOnDeadRS may
fail due to regions may randomly be assigned to a RS
Key: HBASE-8169
URL: https://issues.apache.org/jira/browse/HBASE-8169
Project: HBase
Issue Type: Bug
Components: test
Affects Versions: 0.98.0, 0.94.7
Reporter: Jeffrey Zhong
Assignee: Jeffrey Zhong
Priority: Minor
Fix For: 0.94.7
In the test case, we use "master.assignRegion(hri);" to assign regions to live
RS or dead RS(will be aborted during the test). While master.assignRegion may
not always successfully assign a region to the expected RS due to following
error:
1) We firstly try to open a region in region server, let's say RS1
2) For some reason the region open takes more than a time out period
3) AM tries to reassign it and force a new plan due to the time out
4) the Region is re-assigned to a random RS
Then it cause the test case failure due to regions setup isn't in expected
state.
I attached a log with extra added logging info and some stack traces(with (new
Exception()).printStackTrace() so you can ignore java.lang.Exception). You can
search region 36716be644bc9c78b3a96e0d4a43c183 to see master.assignRegion
assigned a region to a randome RS. I saw the test failed once in 5 times in a
loop.
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