CheckAndPut doesn't work with when value == null
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Key: HBASE-3981
URL: https://issues.apache.org/jira/browse/HBASE-3981
Project: HBase
Issue Type: Bug
Reporter: Ming Ma
Assignee: Ming Ma
Priority: Blocker
When value == null, as in
boolean res = hTable.checkAndPut(rowId, famA, col, null, put);
In HRegion.java,
int compareResult = comparator.compareTo(result.get(0).getValue());
comparator will be null, NPE will be thrown.
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