[PHOENIX-1303] Possible NPE in StatisticCollector#stop

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.2.0, 3.2.0
• Assignee: ramkrishna.s.vasudevan
• Reporter: rajeshbabu
• Created: 29/Sep/14 19:41
• Updated: 21/Nov/15 02:15
• Resolved: 21/Oct/14 20:49

Description

Getting NPE sometimes with SkipScanAfterManualSplitIT test case.

java.lang.RuntimeException: java.lang.NullPointerException
	at org.apache.hadoop.hbase.regionserver.handler.CloseRegionHandler.process(CloseRegionHandler.java:133)
	at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:175)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:724)
Caused by: java.lang.NullPointerException
	at org.apache.phoenix.schema.stat.StatisticsCollector.stop(StatisticsCollector.java:220)
	at org.apache.hadoop.hbase.coprocessor.CoprocessorHost$Environment.shutdown(CoprocessorHost.java:624)
	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$RegionEnvironment.shutdown(RegionCoprocessorHost.java:119)
	at org.apache.hadoop.hbase.coprocessor.CoprocessorHost.shutdown(CoprocessorHost.java:263)
	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postClose(RegionCoprocessorHost.java:344)
	at org.apache.hadoop.hbase.regionserver.HRegion.doClose(HRegion.java:1144)
	at org.apache.hadoop.hbase.regionserver.HRegion.close(HRegion.java:1024)
	at org.apache.hadoop.hbase.regionserver.handler.CloseRegionHandler.process(CloseRegionHandler.java:119)