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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