[HIVE-16848] NPE during CachedStore refresh

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0
• Component/s: Metastore
• Target Version/s: 3.0.0
• Hadoop Flags: Reviewed
• Assignee: Daniel Dai
• Reporter: Daniel Dai
• Created: 07/Jun/17 21:29
• Updated: 22/May/18 23:58
• Resolved: 08/Jun/17 17:38

Description

CachedStore refresh only happen once due to NPE during refresh of column statistics. ScheduledExecutorService canceled subsequent refreshes:

java.lang.NullPointerException
    at org.apache.hadoop.hive.metastore.cache.CachedStore$CacheUpdateMasterWork.updateTableColStats(CachedStore.java:458)
    at org.apache.hadoop.hive.metastore.cache.CachedStore$CacheUpdateMasterWork.run(CachedStore.java:348)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:748)