Riza Suminto has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/21029 )

Change subject: IMPALA-12543: Detect self-events before finishing DDL
......................................................................


Patch Set 14:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/21029/13/fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java
File fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java:

http://gerrit.cloudera.org:8080/#/c/21029/13/fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java@1090
PS13, Line 1090:           + " isRemoved=" + isRemoved);
> Can this function be modified to be called multiple times by removing the p
Precodition is added to accomodate this comment:
https://gerrit.cloudera.org/c/21029/10/fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java#1078

>From perspective of call path that track using this 
>InProgressTableModification, I think the Precondition is good to enforce that 
>cancelInflightEvent() should always be preceded by registerInflightEvent().


http://gerrit.cloudera.org:8080/#/c/21029/13/fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java@1393
PS13, Line 1393:     } finally {
> This pattern of checking hasInflightEventRegistration followed by calling c
There should only be 1 thread tracking using 1 InProgressTableModification 
object.
The possible concurrent modification is for 
table_.removeFromVersionsForInflightEvents(), not the cancelInflightEvent() 
itself.

Modified cancelInflightEvent() comment to clarify this.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I8365c934349ad21a4d9327fc11594d2fc3445f79
Gerrit-Change-Number: 21029
Gerrit-PatchSet: 14
Gerrit-Owner: Riza Suminto <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Jason Fehr <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Riza Suminto <[email protected]>
Gerrit-Reviewer: Sai Hemanth Gantasala <[email protected]>
Gerrit-Comment-Date: Thu, 07 Mar 2024 16:27:12 +0000
Gerrit-HasComments: Yes

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