[jira] [Assigned] (IMPALA-10949) Improve batching logic of events

["Manish Maheshwari (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-10949?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Manish Maheshwari reassigned IMPALA-10949:
------------------------------------------

    Assignee: Sai Hemanth Gantasala

> Improve batching logic of events
> --------------------------------
>
>                 Key: IMPALA-10949
>                 URL: https://issues.apache.org/jira/browse/IMPALA-10949
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Catalog
>            Reporter: Vihang Karajgaonkar
>            Assignee: Sai Hemanth Gantasala
>            Priority: Major
>
> This is a followup based on the review comment https://gerrit.cloudera.org/#/c/17848/2/fe/src/main/java/org/apache/impala/catalog/events/MetastoreEvents.java@1641
> Current approach of batching batches together the events from a single operation so that self-event check is done per-batch. However, it looks like there is a considerable scope of improving the batching logic by clubbing together accross the various sources of the events on a table when IMPALA-10926 is merged. After IMPALA-10926 each table will track the last_synced_event and then the events processor can simply ignore a event which <= the last_synced_event. This simplification of self-events logic will enable easier batching for all the events of a type on a table.



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