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https://issues.apache.org/jira/browse/HIVE-21774?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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mahesh kumar behera reassigned HIVE-21774:
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> Support partition level filtering for events with multiple partitions
> ---------------------------------------------------------------------
>
> Key: HIVE-21774
> URL: https://issues.apache.org/jira/browse/HIVE-21774
> Project: Hive
> Issue Type: Sub-task
> Components: HiveServer2, repl
> Affects Versions: 4.0.0
> Reporter: mahesh kumar behera
> Assignee: mahesh kumar behera
> Priority: Major
> Fix For: 4.0.0
>
>
> Some of the events in hive can span across multiple partitions, table or even
> database. Events related to transactions, can span across multiple databases.
> When a transaction does some write operation, it is added to the write
> notification log table. During dump of commit transaction event, al the
> entries present in the write notification log table for that transaction is
> read and is added to the commit transaction message. In case partition filter
> is supplied for the dump, only those partitions which are part of the policy
> should be added to the commit txn message.
> * All the events which are not partition level will be added to the list of
> events to be dumped.
> * Pass the filter condition for the policy to commit transaction message
> handler (events which are not partition level).
> * During dump for commit transaction event, extract the events added in the
> write notification log table and compare it with the filter condition.
> * If the event from write notification log satisfies the filter condition,
> then add it to the commit transaction message.
> * If filter condition is null, then add all the events from write
> notification log table to commit transaction message.
> * For events which does not have partition level info like open txn, abort
> txn etc, just dump the events without any filtering. So it may happen that
> some of events which are not related to any of the satisfying partition, may
> get replayed.
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