Yida Wu has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/21035 )

Change subject: IMPALA-12818: Intermediate Result Caching plan node framework
......................................................................


Patch Set 3:

(10 comments)

http://gerrit.cloudera.org:8080/#/c/21035/3/be/src/exec/tuple-cache-node.cc
File be/src/exec/tuple-cache-node.cc:

http://gerrit.cloudera.org:8080/#/c/21035/3/be/src/exec/tuple-cache-node.cc@28
PS3, Line 28: allow_tuple_caching
It seems the flag is not used in the class, or do I miss something?


http://gerrit.cloudera.org:8080/#/c/21035/3/fe/src/main/java/org/apache/impala/planner/PlanNode.java
File fe/src/main/java/org/apache/impala/planner/PlanNode.java:

http://gerrit.cloudera.org:8080/#/c/21035/3/fe/src/main/java/org/apache/impala/planner/PlanNode.java@530
PS3, Line 530: tupleCacheInfo == null
Could you please add a comment to describe when or why the tupleCacheInfo is 
null


http://gerrit.cloudera.org:8080/#/c/21035/3/fe/src/main/java/org/apache/impala/planner/PlanNode.java@1237
PS3, Line 1237: recurse to children
For clarity, maybe it is better to have a full sentence like, "Recursively 
compute tuple cache info for children nodes"


http://gerrit.cloudera.org:8080/#/c/21035/3/fe/src/main/java/org/apache/impala/planner/PlanNode.java@1251
PS3, Line 1251: TODO
Would be good if we have a Jira to follow the TODOs


http://gerrit.cloudera.org:8080/#/c/21035/3/fe/src/main/java/org/apache/impala/planner/TupleCacheInfo.java
File fe/src/main/java/org/apache/impala/planner/TupleCacheInfo.java:

http://gerrit.cloudera.org:8080/#/c/21035/3/fe/src/main/java/org/apache/impala/planner/TupleCacheInfo.java@59
PS3, Line 59: String
May consider StringBuilder for hashTrace_ due to string concatenations in 
mergeChild(), StringBuilder could be more efficient


http://gerrit.cloudera.org:8080/#/c/21035/3/fe/src/main/java/org/apache/impala/planner/TupleCacheInfo.java@94
PS3, Line 94: TODO
Would be good if we have a Jira to follow the TODOs


http://gerrit.cloudera.org:8080/#/c/21035/3/fe/src/main/java/org/apache/impala/planner/TupleCachePlanner.java
File fe/src/main/java/org/apache/impala/planner/TupleCachePlanner.java:

http://gerrit.cloudera.org:8080/#/c/21035/3/fe/src/main/java/org/apache/impala/planner/TupleCachePlanner.java@75
PS3, Line 75: TODO
Would be good if we have a Jira to follow the TODOs


http://gerrit.cloudera.org:8080/#/c/21035/3/fe/src/test/java/org/apache/impala/planner/TupleCacheTest.java
File fe/src/test/java/org/apache/impala/planner/TupleCacheTest.java:

http://gerrit.cloudera.org:8080/#/c/21035/3/fe/src/test/java/org/apache/impala/planner/TupleCacheTest.java@59
PS3, Line 59: // TODO: incorporate column information into the key
            :     // verifyDifferentCacheKeys("select id from 
functional.alltypes",
            :     //     "sele
May simply remove the case from the testcase for the commit if we don't support 
it yet


http://gerrit.cloudera.org:8080/#/c/21035/3/fe/src/test/java/org/apache/impala/planner/TupleCacheTest.java@69
PS3, Line 69: TODO
same as above


http://gerrit.cloudera.org:8080/#/c/21035/3/fe/src/test/java/org/apache/impala/planner/TupleCacheTest.java@79
PS3, Line 79:     // TODO: Random functions should make a location ineligible
same as above



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ia1f36a87dcce6efd5d1e1f0bc04009bf009b1961
Gerrit-Change-Number: 21035
Gerrit-PatchSet: 3
Gerrit-Owner: Joe McDonnell <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Joe McDonnell <[email protected]>
Gerrit-Reviewer: Kurt Deschler <[email protected]>
Gerrit-Reviewer: Yida Wu <[email protected]>
Gerrit-Comment-Date: Mon, 26 Feb 2024 02:35:12 +0000
Gerrit-HasComments: Yes

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