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https://issues.apache.org/jira/browse/IMPALA-10153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17266193#comment-17266193
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Patrick Angeles edited comment on IMPALA-10153 at 1/15/21, 5:04 PM:
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I see this is specific to time-travel for Iceberg. Wondering if some thought 
has been put towards how time travel would work with compaction and 
snapshot-cleanup, and also with the Iceberg V2 spec (with row based 
update/delete). Also, I looked for a timetravel Jira for Impala+Kudu and did 
not find one... would be great if the time travel semantics between Kudu and 
Iceberg were consistent.


was (Author: patrickangeles):
I see this is specific to time-travel for Iceberg.I cannot find a Jira for time 
travel via Impala+Kudu. Kudu can support fine grained time-travel. Wondering  
via per... wondering 

> Support time travel for Iceberg tables
> --------------------------------------
>
>                 Key: IMPALA-10153
>                 URL: https://issues.apache.org/jira/browse/IMPALA-10153
>             Project: IMPALA
>          Issue Type: New Feature
>          Components: Frontend
>            Reporter: Zoltán Borók-Nagy
>            Assignee: Gabor Kaszab
>            Priority: Major
>              Labels: impala-iceberg
>
> Iceberg tables support snapshots/data versioning/time travel.
> It means we can query an older version of the table.
> Probably we'll need to extend Impala's SQL syntax to support such queries 
> (Hive will also support such queries, so we should use the same syntax).



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