[HBASE-16725] Don't let flushThread hang in TestHRegion

• Type: Test
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.4.0, 2.0.0
• Fix Version/s: 1.4.0, 2.0.0
• Hadoop Flags: Reviewed
• Assignee: Ted Yu
• Reporter: Ted Yu
• Created: 28/Sep/16 17:09
• Updated: 04/Oct/16 00:17
• Resolved: 29/Sep/16 14:18

Description

I was running TestHRegion locally and observed the following in test output:

2016-09-28 16:29:36,836 INFO  [main] hbase.ResourceChecker(171): after: regionserver.TestHRegion#testFlushCacheWhileScanning Thread=50 (was 49)
Potentially hanging thread: FlushThread
  java.lang.Object.wait(Native Method)
  java.lang.Object.wait(Object.java:502)
  org.apache.hadoop.hbase.regionserver.TestHRegion$FlushThread.run(TestHRegion.java:3834)

Call to flushThread.done() etc should be placed in the finally block.