DaveBirdsall opened a new pull request #1809: [TRAFODION-3282] Fix buffer overrun in ExHdfsScanTcb::work URL: https://github.com/apache/trafodion/pull/1809 There are two changes in this pull request: 1. Fix a buffer overrun in ExHdfsScanTcb::work, which happens when we process a Hive row longer than we expect and that row spans read buffers. Now we will raise an 8457 error in this case. 2. A workaround to avoid error 8457 is to use CQD HIVE_MAX_STRING_LENGTH_IN_BYTES 'nnnn', setting nnnn to the length of the longest string in the Hive table. There was a bug in UPDATE STATISTICS ... CREATE SAMPLE where this particular CQD was not passed down to the appropriate tdm_arkcmp, defeating the workaround. This bug has been fixed.
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