[IMPALA-7520] NPE in SentryProxy

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 3.1.0
• Fix Version/s: Impala 3.1.0
• Component/s: Frontend
• Epic Color: ghx-label-7
• Assignee: Fredy Wijaya
• Reporter: Adam Holley
• Created: 02/Sep/18 03:02
• Updated: 02/Oct/18 17:33
• Resolved: 02/Oct/18 01:49

Description

In SentryProxy.refreshPrivilegesInCache(), the call to allPrincipalPrivileges.get(principal.getName()) is sometimes returning null.

java.lang.NullPointerException
    at org.apache.impala.util.SentryProxy$PolicyReader.refreshPrivilegesInCatalog(SentryProxy.java:245)
    at org.apache.impala.util.SentryProxy$PolicyReader.refreshRolePrivileges(SentryProxy.java:197)
    at org.apache.impala.util.SentryProxy$PolicyReader.run(SentryProxy.java:139)
    at java.util.concurrent.Executors$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:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)