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Posted to issues-all@impala.apache.org by "Zoltán Borók-Nagy (Jira)" <ji...@apache.org> on 2021/08/27 16:28:00 UTC

[jira] [Created] (IMPALA-10893) Use old schema during time travel

Zoltán Borók-Nagy created IMPALA-10893:
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             Summary: Use old schema during time travel
                 Key: IMPALA-10893
                 URL: https://issues.apache.org/jira/browse/IMPALA-10893
             Project: IMPALA
          Issue Type: Sub-task
            Reporter: Zoltán Borók-Nagy


With Iceberg V1 we cannot retrieve the old schema of a snapshot. But V2 will have this functionality:

[https://github.com/apache/iceberg/issues/1029]

So it would make sense to use the old snapshot's table schema during a time travel query.

Interestingly MS SQL SERVER also queries temporal tables with current table schema.



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