[jira] [Created] (HBASE-19649) Use Singleton Feature for ImmutableSegment.java

[BELUGA BEHR (JIRA)]

BELUGA BEHR created HBASE-19649:
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             Summary: Use Singleton Feature for ImmutableSegment.java
                 Key: HBASE-19649
                 URL: https://issues.apache.org/jira/browse/HBASE-19649
             Project: HBase
          Issue Type: Improvement
          Components: hbase
    Affects Versions: 3.0.0, 2.0.0-beta-2
            Reporter: BELUGA BEHR
            Priority: Trivial


* Cleanup import list
* Use Collections.singletonList instead of the current round-about way of doing 
it



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