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https://issues.apache.org/jira/browse/IMPALA-10153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17266219#comment-17266219
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Tim Armstrong commented on IMPALA-10153:
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WIth Kudu my understanding is that you could do temporal queries back until the 
ancient history marker, beyond which point per-row timestamps are no longer 
maintained - 
https://github.com/cloudera/kudu/blob/master/docs/design-docs/tablet-history-gc.md

> 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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