Vuk Ercegovac has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/8480 )

Change subject: IMPALA-4985: use parquet stats of nested types for dynamic 
pruning
......................................................................


Patch Set 6:

(4 comments)

http://gerrit.cloudera.org:8080/#/c/8480/6/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/8480/6/fe/src/main/java/org/apache/impala/analysis/SlotRef.java@154
PS6, Line 154:    * Checks if slotRef refers to an array "pos" pseudo-column.
> Checks if this SlotRef
Done


http://gerrit.cloudera.org:8080/#/c/8480/6/fe/src/main/java/org/apache/impala/analysis/SlotRef.java@160
PS6, Line 160:   public boolean isArrayPosReference() {
> isArrayPosRef()
Done


http://gerrit.cloudera.org:8080/#/c/8480/6/fe/src/main/java/org/apache/impala/planner/HdfsScanNode.java
File fe/src/main/java/org/apache/impala/planner/HdfsScanNode.java:

http://gerrit.cloudera.org:8080/#/c/8480/6/fe/src/main/java/org/apache/impala/planner/HdfsScanNode.java@541
PS6, Line 541:       // It is assumed that analysis adds these guards such that 
they are correct, but
> guards -> filters
done. checked that this not used in the rest of this file.


http://gerrit.cloudera.org:8080/#/c/8480/5/testdata/workloads/functional-planner/queries/PlannerTest/parquet-filtering.test
File 
testdata/workloads/functional-planner/queries/PlannerTest/parquet-filtering.test:

http://gerrit.cloudera.org:8080/#/c/8480/5/testdata/workloads/functional-planner/queries/PlannerTest/parquet-filtering.test@96
PS5, Line 96: ---- PLAN
> Got it. Might want to change that, but definitely not in this patch.
right, a naive change could cause too many changes/noise.

for the point about conflicts, perhaps a plan visitor to extract and test would 
be useful for checking for simple, local properties like these. that would move 
all of these tests from this text file to a plain java test.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0c99e20cb080b504442cd5376ea3e046016158fe
Gerrit-Change-Number: 8480
Gerrit-PatchSet: 6
Gerrit-Owner: Vuk Ercegovac <[email protected]>
Gerrit-Reviewer: Alex Behm <[email protected]>
Gerrit-Reviewer: Lars Volker <[email protected]>
Gerrit-Reviewer: Vuk Ercegovac <[email protected]>
Gerrit-Comment-Date: Wed, 22 Nov 2017 00:05:47 +0000
Gerrit-HasComments: Yes

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