[SENTRY-2498] Exception while deleting paths that does't exist

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2.0
• Fix Version/s: 2.2.0
• Component/s: Sentry
• Assignee: Krishna Kalyan
• Reporter: Krishna Kalyan
• Created: 14/Feb/19 23:25
• Updated: 15/Feb/19 20:09
• Resolved: 15/Feb/19 20:09

Description

Currently, HMSPaths is throwing an exception while deleting the paths for an object that is not known. Here is the stack trace for the exception

2019-02-13 10:19:16,351 WARN org.apache.sentry.hdfs.SentryAuthorizationInfo: Failed to update, will retry in [30000]ms, error: 
java.lang.NullPointerException
    at org.apache.sentry.hdfs.HMSPaths.deletePathsFromAuthzObject(HMSPaths.java:801)
    at org.apache.sentry.hdfs.UpdateableAuthzPaths.applyPartialUpdate(UpdateableAuthzPaths.java:155)
    at org.apache.sentry.hdfs.UpdateableAuthzPaths.updatePartial(UpdateableAuthzPaths.java:89)
    at org.apache.sentry.hdfs.SentryAuthorizationInfo.processUpdates(SentryAuthorizationInfo.java:202)
    at org.apache.sentry.hdfs.SentryAuthorizationInfo.update(SentryAuthorizationInfo.java:135)
    at org.apache.sentry.hdfs.SentryAuthorizationInfo.run(SentryAuthorizationInfo.java:220)
    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)
2019-02-13 10:19:17,670 INFO SecurityLogger.