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https://issues.apache.org/jira/browse/HIVE-25849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17470700#comment-17470700
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Marton Bod commented on HIVE-25849:
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Pushed to master. Thanks [~szita] and [~pvary] for checking it.
> Disable insert overwrite for bucket partitioned Iceberg tables
> --------------------------------------------------------------
>
> Key: HIVE-25849
> URL: https://issues.apache.org/jira/browse/HIVE-25849
> Project: Hive
> Issue Type: Improvement
> Reporter: Marton Bod
> Assignee: Marton Bod
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Insert overwrite should be disabled where the target Iceberg table is a
> bucket partitioned table, since which existing partitions will be overwritten
> is very hard to predict from a user's POV, as it depends on the bucket hash
> values calculated for the new dataset's rows. It's better to be on the safe
> side and disable this operation to avoid unwanted data loss.
> Note: this the same approach followed by Impala too.
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