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https://issues.apache.org/jira/browse/IMPALA-9857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17424042#comment-17424042
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Vihang Karajgaonkar commented on IMPALA-9857:
---------------------------------------------
IMPALA-10949 is created as a follow-up which can improve the batching logic
significantly.
> Batch ALTER_PARTITION events
> ----------------------------
>
> Key: IMPALA-9857
> URL: https://issues.apache.org/jira/browse/IMPALA-9857
> Project: IMPALA
> Issue Type: Improvement
> Components: Catalog
> Reporter: Vihang Karajgaonkar
> Assignee: Vihang Karajgaonkar
> Priority: Major
>
> When Hive inserts data into partitioned tables, it generates a lot of
> ALTER_PARTITION (and possibly INSERT_EVENT) in quick succession. Currently,
> such events are processed one by one by EventsProcessor which is can be slow
> and can cause EventsProcessor to lag behind. This JIRA proposes to use
> batching for such ALTER_PARTITION events such that all the successive
> ALTER_PARTITION events for the same table are batched together into one
> ALTER_PARTITIONS event and then are processed together to refresh all the
> partitions from the events. This can significantly speed up the event
> processing in such cases.
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