[TAJO-2038] NPE in FileScanner#getProgress

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.11.0
• Fix Version/s: 0.12.0, 0.11.1
• Component/s: Storage
• Assignee: Jinho Kim
• Reporter: Jinho Kim
• Created: 06/Jan/16 09:09
• Updated: 12/Jan/16 03:54
• Resolved: 12/Jan/16 02:34

Description

getProgress can cause NPE when scanner are closed

2016-01-06 07:51:57,746 ERROR: org.apache.tajo.worker.ExecutionBlockContext (run(471)) - 
java.lang.NullPointerException
	at org.apache.tajo.storage.text.DelimitedTextFile$DelimitedTextFileScanner.getProgress(DelimitedTextFile.java:358)
	at org.apache.tajo.engine.planner.physical.SeqScanExec.getProgress(SeqScanExec.java:345)
	at org.apache.tajo.engine.planner.physical.UnaryPhysicalExec.getProgress(UnaryPhysicalExec.java:87)
	at org.apache.tajo.worker.TaskImpl.updateProgress(TaskImpl.java:319)
	at org.apache.tajo.worker.ExecutionBlockContext$Reporter$1.run(ExecutionBlockContext.java:467)
	at java.lang.Thread.run(Thread.java:745)