[jira] [Created] (HBASE-21140) Backport 'HBASE-21136 NPE in MetricsTableSourceImpl.updateFlushTime' to branch-1

[Duo Zhang (JIRA)]

Duo Zhang created HBASE-21140:
---------------------------------

             Summary: Backport 'HBASE-21136 NPE in 
MetricsTableSourceImpl.updateFlushTime' to branch-1
                 Key: HBASE-21140
                 URL: https://issues.apache.org/jira/browse/HBASE-21140
             Project: HBase
          Issue Type: Bug
          Components: metrics
            Reporter: Duo Zhang
             Fix For: 1.5.0


There is no computeIfAbsent method on branch-1 as we still need to support 
JDK7, so the fix will be different with branch-2+.



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