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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-18679) YARN may null Counters object and cause an NPE in ITBLL
Date Thu, 24 Aug 2017 21:52:00 GMT
Josh Elser created HBASE-18679:

             Summary: YARN may null Counters object and cause an NPE in ITBLL
                 Key: HBASE-18679
                 URL: https://issues.apache.org/jira/browse/HBASE-18679
             Project: HBase
          Issue Type: Bug
          Components: integration tests
            Reporter: Josh Elser
            Assignee: Josh Elser
            Priority: Trivial
             Fix For: 2.0.0, 1.4.0, 1.3.2, 1.5.0, 1.2.7, 1.1.13

YARN has a configuration limit to the number of counters that a job can create (to avoid some
bad job from DDOS'ing the service).

When running ITBLL, we ran into this limit due to the default configuration rather low at
the time. When YARN notices that the counter limit has been exceeded, it nulls out the Counters
object obtained by the Job.

Presently in ITBLL, we have a few places where we (reasonably ;)) assume that the Counters
object would be non-null. Can easily fix this with a null-check.

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