Venugopal Reddy K created IMPALA-12399:
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Summary: 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
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.
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