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https://issues.apache.org/jira/browse/IMPALA-7973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16884521#comment-16884521
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Anurag Mantripragada commented on IMPALA-7973:
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[~arodoni_cloudera], Before this change, any partition level events would
invalidate the entire table. After this change, such events selectively refresh
the partitions which were involved. This applies to create, drop and alter
partitions.
> Add support for fine-grained updates at partition level
> -------------------------------------------------------
>
> Key: IMPALA-7973
> URL: https://issues.apache.org/jira/browse/IMPALA-7973
> Project: IMPALA
> Issue Type: Sub-task
> Reporter: Vihang Karajgaonkar
> Assignee: Anurag Mantripragada
> Priority: Major
> Fix For: Impala 3.3.0
>
>
> When data is inserted into a partition or a new partition is created in a
> large table, we should not be invalidating the whole table. Instead it should
> be possible to refresh/add/drop certain partitions on the table directly
> based on the event information. This would help with the performance of
> subsequent access to the table by avoiding reloading the large table.
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