Quanlong Huang has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/17811 )

Change subject: IMPALA-9498: Allow returning arrays in select list
......................................................................


Patch Set 28:

(4 comments)

Still looking into the FE part. Reviewed some simple changes first.

http://gerrit.cloudera.org:8080/#/c/17811/28/fe/src/main/java/org/apache/impala/analysis/SlotRef.java
File fe/src/main/java/org/apache/impala/analysis/SlotRef.java:

http://gerrit.cloudera.org:8080/#/c/17811/28/fe/src/main/java/org/apache/impala/analysis/SlotRef.java@a105
PS28, Line 105:
Could you explain why we should remove this?


http://gerrit.cloudera.org:8080/#/c/17811/28/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/17811/28/fe/src/main/java/org/apache/impala/planner/PlanNode.java@161
PS28, Line 161:   protected PlanNode(PlanNodeId id, String displayName,
              :       List<CollectionTableRef> tblRefs) {
              :     this(id, displayName);
              :     for (CollectionTableRef collRef : tblRefs) {
              :       tupleIds_.add(collRef.getDesc().getId());
              :       tblRefIds_.add(collRef.getDesc().getId());
              :     }
              :   }
It seems this is no longer used. I think we can remove it.


http://gerrit.cloudera.org:8080/#/c/17811/28/fe/src/main/java/org/apache/impala/planner/SingleNodePlanner.java
File fe/src/main/java/org/apache/impala/planner/SingleNodePlanner.java:

http://gerrit.cloudera.org:8080/#/c/17811/28/fe/src/main/java/org/apache/impala/planner/SingleNodePlanner.java@322
PS28, Line 322:         
Preconditions.checkState(!expr.getType().isCollectionType(),
              :             "Sorting is not supported if the select list 
contains collection columns.");
nit: it'd be better to throw AnalysisException instead of IllegalStateException 
which usually indicates bugs.


http://gerrit.cloudera.org:8080/#/c/17811/28/fe/src/main/java/org/apache/impala/planner/UnnestNode.java
File fe/src/main/java/org/apache/impala/planner/UnnestNode.java:

http://gerrit.cloudera.org:8080/#/c/17811/28/fe/src/main/java/org/apache/impala/planner/UnnestNode.java@63
PS28, Line 63:       
tupleIds_.addAll(collectionSlotRef.getDesc().getItemTupleDesc().getId().asList());
             :       
tblRefIds_.addAll(collectionSlotRef.getDesc().getItemTupleDesc().getId().asList());
nit: we can add the id directly

 tupleIds_.add(collectionSlotRef.getDesc().getItemTupleDesc().getId());
 tblRefIds_.add(collectionSlotRef.getDesc().getItemTupleDesc().getId());



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ibb1e42ffb21c7ddc033aba0f754b0108e46f34d0
Gerrit-Change-Number: 17811
Gerrit-PatchSet: 28
Gerrit-Owner: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Attila Jeges <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Daniel Becker <[email protected]>
Gerrit-Reviewer: Gabor Kaszab <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Qifan Chen <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Comment-Date: Wed, 15 Dec 2021 12:34:27 +0000
Gerrit-HasComments: Yes

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