Quanlong Huang has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/22634 )

Change subject: IMPALA-13850: Wait until CatalogD active before resetting 
metadata
......................................................................


Patch Set 3:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/22634/3/fe/src/main/java/org/apache/impala/catalog/CatalogServiceCatalog.java
File fe/src/main/java/org/apache/impala/catalog/CatalogServiceCatalog.java:

http://gerrit.cloudera.org:8080/#/c/22634/3/fe/src/main/java/org/apache/impala/catalog/CatalogServiceCatalog.java@2307
PS3, Line 2307:         for (String dbName: allDbs) {
Can we add a debug_action before this to sleep for a while to minic the 
slowness in this method (and the write lock of versionLock_ is held)?


http://gerrit.cloudera.org:8080/#/c/22634/2/tests/custom_cluster/test_catalogd_ha.py
File tests/custom_cluster/test_catalogd_ha.py:

http://gerrit.cloudera.org:8080/#/c/22634/2/tests/custom_cluster/test_catalogd_ha.py@179
PS2, Line 179:     # Kill active catalogd
             :     active_catalogd.kill()
> Queries run before standby catalogd becomes active will fail. See test_cata
Trying to understand why we need sync_ddl=1 in the test. Maybe just use it to 
introduce a configurable delay?

It seems no tests run the query after the active catalogd is killed and before 
the standby becomes active. They both run the query before killing the active 
catalogd. But I might miss something.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I58cc66dcccedb306ff11893f2916ee5ee6a3efc1
Gerrit-Change-Number: 22634
Gerrit-PatchSet: 3
Gerrit-Owner: Riza Suminto <riza.sumi...@cloudera.com>
Gerrit-Reviewer: Abhishek Rawat <ara...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Quanlong Huang <huangquanl...@gmail.com>
Gerrit-Reviewer: Riza Suminto <riza.sumi...@cloudera.com>
Gerrit-Reviewer: Wenzhe Zhou <wz...@cloudera.com>
Gerrit-Comment-Date: Thu, 20 Mar 2025 12:02:07 +0000
Gerrit-HasComments: Yes

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