Quanlong Huang has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/23789 )

Change subject: IMPALA-14535: Improve wait for HMS events sync with 
hierarchical event processing
......................................................................


Patch Set 6:

(3 comments)

The e2e TestEventSyncWaiting in dockerised run seems to spend more time after 
this patch (26m vs. 21m).
https://jenkins.impala.io/job/ubuntu-20.04-dockerised-tests/4615/testReport/metadata.test_event_processing/TestEventSyncWaiting/
master run: 
https://jenkins.impala.io/job/ubuntu-20.04-dockerised-tests/4641/testReport/metadata.test_event_processing/TestEventSyncWaiting/

The difference mostly comes from test_view_partitioned (8m5s vs. 4m4s).
Could you take a look?

http://gerrit.cloudera.org:8080/#/c/23789/6/fe/src/main/java/org/apache/impala/catalog/events/MetastoreEventsProcessor.java
File 
fe/src/main/java/org/apache/impala/catalog/events/MetastoreEventsProcessor.java:

http://gerrit.cloudera.org:8080/#/c/23789/6/fe/src/main/java/org/apache/impala/catalog/events/MetastoreEventsProcessor.java@2021
PS6, Line 2021:           eventExecutorService_.isProcessed(dbName, 
latestEventId));
nit: when removeIf() returns true (meaning something is removed), let's log the 
remaining dbNames or saying "all required db events are synced" if dbNames is 
empty.


http://gerrit.cloudera.org:8080/#/c/23789/6/fe/src/main/java/org/apache/impala/catalog/events/MetastoreEventsProcessor.java@2027
PS6, Line 2027:             eventExecutorService_.isProcessed(entry.getKey(), 
tableName, latestEventId));
nit: let's also add a similar log here for tables.


http://gerrit.cloudera.org:8080/#/c/23789/6/fe/src/main/java/org/apache/impala/catalog/events/MetastoreEventsProcessor.java@2034
PS6, Line 2034:         Uninterruptibles.sleepUninterruptibly(sleepIntervalMs, 
TimeUnit.MILLISECONDS);
nit: it'd also be helpful to log a waiting message like the single-threaded 
mode.
https://github.com/apache/impala/blob/1753c3aa7c4829882fd9d32518da9b7a667f5cf1/fe/src/main/java/org/apache/impala/catalog/events/MetastoreEventsProcessor.java#L1927-L1930



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I55cea4cb8e04860202e56e1b1bf2596613b4946c
Gerrit-Change-Number: 23789
Gerrit-PatchSet: 6
Gerrit-Owner: Anonymous Coward <[email protected]>
Gerrit-Reviewer: Anonymous Coward <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Sai Hemanth Gantasala <[email protected]>
Gerrit-Comment-Date: Mon, 09 Feb 2026 13:52:14 +0000
Gerrit-HasComments: Yes

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