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https://issues.apache.org/jira/browse/IMPALA-12607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17845221#comment-17845221
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ASF subversion and git services commented on IMPALA-12607:
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Commit 68f8a6a1df0d2da91baa87b8b6699ddbc495b88e in impala's branch
refs/heads/master from Sai Hemanth Gantasala
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=68f8a6a1d ]
IMPALA-12607: Bump the GBN and fetch events specific to the db/table
from the metastore
Bump the GBN to 49623641 to leverage HIVE-27499, so that Impala can
directly fetch the latest events specific to the db/table from the
metastore, instead of fetching the events from metastore and then
filtering in the cache matching the DbName/TableName.
Implementation Details:
Currently when a DDL/DML is performed in Impala, we fetch all the
events from metastore based on current eventId and then filter them in
Impala which can be a bottleneck if the events count is huge. This can
be optimized by including db name and/or table name in the notification
event request object and then filter by event type in impala. This can
provide performance boost on tables that generate a lot of events.
Note:
Also included ShowUtils class in hive-minimal-exec jar as it is
required in the current build version
Testing:
1) Did some tests in local cluster
2) Added a test case in MetaStoreEventsProcessorTest
Change-Id: I6aecd5108b31c24e6e2c6f9fba6d4d44a3b00729
Reviewed-on: http://gerrit.cloudera.org:8080/20979
Reviewed-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
> Bump GBN to get HMS thift API change HIVE-27499
> -----------------------------------------------
>
> Key: IMPALA-12607
> URL: https://issues.apache.org/jira/browse/IMPALA-12607
> Project: IMPALA
> Issue Type: Improvement
> Components: Catalog
> Reporter: Sai Hemanth Gantasala
> Assignee: Sai Hemanth Gantasala
> Priority: Major
> Labels: catalog-2024
>
> Leverage HIVE-27499, so that Impala can directly fetch the latest events
> specific to the database/table from the metastore, instead of fetching the
> events from metastore and then filtering in the cache matching the
> DbName/TableName.
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