[jira] [Created] (ACCUMULO-2870) Potential null pointer dereference in Tablet#longestCommonLength()

["Ted Yu (JIRA)" <ji...@apache.org>]

Ted Yu created ACCUMULO-2870:
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             Summary: Potential null pointer dereference in Tablet#longestCommonLength()
                 Key: ACCUMULO-2870
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2870
             Project: Accumulo
          Issue Type: Bug
            Reporter: Ted Yu
            Priority: Minor


longestCommonLength() is called by findSplitRow():
{code}
      Text text = (mid == null) ? null : mid.getRow();
      SortedMap<Double,Key> firstHalf = keys.headMap(.5);
      if (firstHalf.size() > 0) {
        Text beforeMid = firstHalf.get(firstHalf.lastKey()).getRow();
        Text shorter = new Text();
        int trunc = longestCommonLength(text, beforeMid);
{code}
If mid is null, text would be null.
However, text is dereferenced without null check in longestCommonLength().



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