[TAJO-1697] RCFile progress causes NPE occasionally

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.10.0, 0.10.1
• Fix Version/s: 0.11.0
• Component/s: Storage
• Assignee: Jinho Kim
• Reporter: Jinho Kim
• Created: 22/Jul/15 07:50
• Updated: 22/Jul/15 10:02
• Resolved: 22/Jul/15 09:25

Description

The progress updater can invoke before RCFile.init()

2015-07-21 14:19:13,102 ERROR org.apache.tajo.worker.ExecutionBlockContext:
java.lang.NullPointerException
       at org.apache.tajo.storage.rcfile.RCFile$RCFileScanner.getPosition(RCFile.java:1401)
       at org.apache.tajo.storage.rcfile.RCFile$RCFileScanner.getProgress(RCFile.java:1655)
       at org.apache.tajo.engine.planner.physical.SeqScanExec.getProgress(SeqScanExec.java:301)
       at org.apache.tajo.engine.planner.physical.UnaryPhysicalExec.getProgress(UnaryPhysicalExec.java:87)
       at org.apache.tajo.worker.TaskImpl.updateProgress(TaskImpl.java:305)
       at org.apache.tajo.worker.ExecutionBlockContext$Reporter$1.run(ExecutionBlockContext.java:409)
       at java.lang.Thread.run(Thread.java:745)