Bharath Vissapragada has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/11341 )

Change subject: IMPALA-7424: Reduce in-memory footprint of incremental stats
......................................................................


Patch Set 7:

(6 comments)

http://gerrit.cloudera.org:8080/#/c/11341/7/fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java
File fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java:

http://gerrit.cloudera.org:8080/#/c/11341/7/fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java@530
PS7, Line 530:   private boolean hasIncrementalStats_;
> start this off at false. I could not easily see when its set (I see from th
Java defaults it to false but yes setting it explicitly makes it more readable.


http://gerrit.cloudera.org:8080/#/c/11341/7/fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java@690
PS7, Line 690:     Preconditions.checkState(
> agreed. just discussed this offline. when/if it gets written back, we can c
Done


http://gerrit.cloudera.org:8080/#/c/11341/6/fe/src/main/java/org/apache/impala/catalog/HdfsTable.java
File fe/src/main/java/org/apache/impala/catalog/HdfsTable.java:

http://gerrit.cloudera.org:8080/#/c/11341/6/fe/src/main/java/org/apache/impala/catalog/HdfsTable.java@1712
PS6, Line 1712:
> I think it should be included with metadata, not with the want_stats select
Done


http://gerrit.cloudera.org:8080/#/c/11341/7/fe/src/main/java/org/apache/impala/catalog/PartitionStatsUtil.java
File fe/src/main/java/org/apache/impala/catalog/PartitionStatsUtil.java:

http://gerrit.cloudera.org:8080/#/c/11341/7/fe/src/main/java/org/apache/impala/catalog/PartitionStatsUtil.java@65
PS7, Line 65: decompressed
> null on an internal exception in deflateDecompress
Done


http://gerrit.cloudera.org:8080/#/c/11341/7/fe/src/main/java/org/apache/impala/catalog/PartitionStatsUtil.java@149
PS7, Line 149: decompressed
> can be null if there's an exception in deflateDecompress.
Done


http://gerrit.cloudera.org:8080/#/c/11341/7/fe/src/main/java/org/apache/impala/util/CompressionUtil.java
File fe/src/main/java/org/apache/impala/util/CompressionUtil.java:

http://gerrit.cloudera.org:8080/#/c/11341/7/fe/src/main/java/org/apache/impala/util/CompressionUtil.java@64
PS7, Line 64: return null
> why is this null in this case, but empty in the compress case (L49)? caller
Ah oversight during refactoring.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I39f02ebfa0c6e9b0baedd0d76058a1b34efb5a02
Gerrit-Change-Number: 11341
Gerrit-PatchSet: 7
Gerrit-Owner: Bharath Vissapragada <[email protected]>
Gerrit-Reviewer: Bharath Vissapragada <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Todd Lipcon <[email protected]>
Gerrit-Reviewer: Vuk Ercegovac <[email protected]>
Gerrit-Comment-Date: Fri, 31 Aug 2018 18:31:31 +0000
Gerrit-HasComments: Yes

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