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Posted to issues@impala.apache.org by "Norbert Luksa (Jira)" <ji...@apache.org> on 2020/01/21 15:02:00 UTC

[jira] [Created] (IMPALA-9310) OrcStringColumnReader could move blob instead of copy

Norbert Luksa created IMPALA-9310:
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             Summary: OrcStringColumnReader could move blob instead of copy
                 Key: IMPALA-9310
                 URL: https://issues.apache.org/jira/browse/IMPALA-9310
             Project: IMPALA
          Issue Type: Bug
            Reporter: Norbert Luksa


Since IMPALA-9226, in OrcStringColumnReader the blobs of a batch are copied to a freshly allocated space by Impala. As Zoltán pointed out in a [review|https://gerrit.cloudera.org/#/c/15051/1/be/src/exec/orc-column-readers.cc@158], a possible improvement is moving a blob by finding a way of getting hold of the memory allocated by the ORC library instead of copying.



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