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Posted to issues-all@impala.apache.org by "Venugopal Reddy K (Jira)" <ji...@apache.org> on 2023/08/24 07:34:00 UTC
[jira] [Updated] (IMPALA-12399) Pass eventTypeSkipList with OPEN_TXN in NotificationEventRequest to avoid receiving OPEN_TXN events from HMS
[ https://issues.apache.org/jira/browse/IMPALA-12399?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Venugopal Reddy K updated IMPALA-12399:
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Description: Notification events like OPEN_TXN are ignored on catalogd {{{}MetastoreEventsProcessor{}}}. So, we can pass eventTypeSkipList with OPEN_TXN in NotificationEventRequest while invoking get_next_notification() to avoid reading such notification messages from HMS and then ignoring on catalogd. OPEN_TXN event being more frequent(received even upon describe table operation from beeline), we can significantly reduce unwanted processing on both HMS and catalogd. Catalogd reads events in batches of EVENTS_BATCH_SIZE_PER_RPC, skipping such unnecessary events can help catchup the events faster. (was: Notification events like OPEN_TXN are ignored on catalogd. So, we can pass eventTypeSkipList with OPEN_TXN in NotificationEventRequest while invoking get_next_notification() to avoid reading such notification messages from HMS and then ignoring on catalogd. OPEN_TXN event being more frequent(received even upon describe table operation from beeline), we can significantly reduce unwanted processing on both HMS and catalogd. Catalogd reads events in batches of EVENTS_BATCH_SIZE_PER_RPC, skipping such unnecessary events can help catchup the events faster.)
> Pass eventTypeSkipList with OPEN_TXN in NotificationEventRequest to avoid receiving OPEN_TXN events from HMS
> ------------------------------------------------------------------------------------------------------------
>
> Key: IMPALA-12399
> URL: https://issues.apache.org/jira/browse/IMPALA-12399
> Project: IMPALA
> Issue Type: Improvement
> Components: Catalog
> Reporter: Venugopal Reddy K
> Priority: Major
>
> Notification events like OPEN_TXN are ignored on catalogd {{{}MetastoreEventsProcessor{}}}. So, we can pass eventTypeSkipList with OPEN_TXN in NotificationEventRequest while invoking get_next_notification() to avoid reading such notification messages from HMS and then ignoring on catalogd. OPEN_TXN event being more frequent(received even upon describe table operation from beeline), we can significantly reduce unwanted processing on both HMS and catalogd. Catalogd reads events in batches of EVENTS_BATCH_SIZE_PER_RPC, skipping such unnecessary events can help catchup the events faster.
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