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Posted to issues@impala.apache.org by "Gabor Kaszab (Jira)" <ji...@apache.org> on 2022/08/24 13:24:00 UTC

[jira] [Created] (IMPALA-11529) FILE__POSITION virtual column for ORC

Gabor Kaszab created IMPALA-11529:
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             Summary: FILE__POSITION virtual column for ORC
                 Key: IMPALA-11529
                 URL: https://issues.apache.org/jira/browse/IMPALA-11529
             Project: IMPALA
          Issue Type: New Feature
          Components: Backend
            Reporter: Gabor Kaszab


https://gerrit.cloudera.org/#/c/18704/ implemented the support of FILE_POSITION virtual column for Parquet files. This ticket covers the same but for ORC files.

Note, ORC scanner already has a functionality to calculate the position of a row in a file, in an optimal scenario it only has to be re-used for the FILE_POSITION virtual column.
see: https://github.com/apache/impala/blob/8e0482294975352d3d34d75adb50602d85b3c155/be/src/exec/orc/hdfs-orc-scanner.h#L275




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