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Posted to dev@orc.apache.org by "Owen O'Malley (JIRA)" <ji...@apache.org> on 2015/08/03 22:22:04 UTC

[jira] [Created] (ORC-24) C++ reader for direct string encodings occasionally skips bytes

Owen O'Malley created ORC-24:
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             Summary: C++ reader for direct string encodings occasionally skips bytes 
                 Key: ORC-24
                 URL: https://issues.apache.org/jira/browse/ORC-24
             Project: Orc
          Issue Type: Bug
          Components: C++
            Reporter: Owen O'Malley
            Assignee: Owen O'Malley
             Fix For: 1.0.0


The ORC C++ direct string column reader can occasionally skip bytes in the blob stream.

The necessary conditions are:
* The column is a string column and is directly encoded.
* The blob stream for the row batch crosses a compression block boundary.
* There is a null value toward the end of the block boundary.
* The value in the length value of the null value crosses the block boundary, but the length value of the following value does not.






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