Nandor Kollar has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/24633 )

Change subject: IMPALA-15222: Short-circuit OPTIMIZE when the table is compact
......................................................................


Patch Set 1:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/24633/1/fe/src/main/java/org/apache/impala/analysis/OptimizeStmt.java
File fe/src/main/java/org/apache/impala/analysis/OptimizeStmt.java:

http://gerrit.cloudera.org:8080/#/c/24633/1/fe/src/main/java/org/apache/impala/analysis/OptimizeStmt.java@180
PS1, Line 180:     if (mode_ == TIcebergOptimizationMode.NO_OP) {
I'm afraid that due to the early return here, there's a slim chance that reset 
(if it is called at all) will fail with an NPE, as both sortColumns_ and 
sourceStmt_ remain uninitialized.

It seems that reAnalyze calls reset on the statement. Is there any chance that 
an Optimize statement gets reanalyzed? The fix should be simple: I think we 
should guard each state variable change in reset with a null check.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I795967ca18231ef1fefdbc71a9b4505905906f95
Gerrit-Change-Number: 24633
Gerrit-PatchSet: 1
Gerrit-Owner: Noemi Pap-Takacs <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Daniel Vanko <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Mihaly Szjatinya <[email protected]>
Gerrit-Reviewer: Nandor Kollar <[email protected]>
Gerrit-Reviewer: Zoltan Borok-Nagy <[email protected]>
Gerrit-Comment-Date: Thu, 13 Aug 2026 13:49:48 +0000
Gerrit-HasComments: Yes

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