Preston Carman has posted comments on this change.

Change subject: RangeGenerator aggfunc for the numeric/asciiString datatype 
based on parallel streaming histogram.
......................................................................


Patch Set 14:

(5 comments)

I did a quick glance over the code. 

Is this only the range aggregate functions? (We still need to bake this into 
the compiler to get parallel sort, correct?)

https://asterix-gerrit.ics.uci.edu/#/c/806/14/asterixdb/asterix-app/src/test/resources/runtimets/results/aggregate/global-rg/global-avg.1.adm
File 
asterixdb/asterix-app/src/test/resources/runtimets/results/aggregate/global-rg/global-avg.1.adm:

Line 1: [  ]
Why is the result empty? This seems like a bad test. Why create a range query 
that produces no results?


https://asterix-gerrit.ics.uci.edu/#/c/806/14/asterixdb/asterix-app/src/test/resources/runtimets/results/aggregate/local-rg/local-rg.1.adm
File 
asterixdb/asterix-app/src/test/resources/runtimets/results/aggregate/local-rg/local-rg.1.adm:

Line 1: [  ]
Why is the result empty?


https://asterix-gerrit.ics.uci.edu/#/c/806/14/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/scalar/ScalarRangeGeneratorAggregateDescriptor.java
File 
asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/scalar/ScalarRangeGeneratorAggregateDescriptor.java:

Line 29:     public final static FunctionIdentifier FID = 
AsterixBuiltinFunctions.SCALAR_RG;
Do you need this variable FID? Can this be inlined?


https://asterix-gerrit.ics.uci.edu/#/c/806/14/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/LocalRangeGeneratorAggregateFunction.java
File 
asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/LocalRangeGeneratorAggregateFunction.java:

Line 89:                     translateVal = new BytePointable();
Use factory to create pointable.


https://asterix-gerrit.ics.uci.edu/#/c/806/14/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/RangeGeneratorAggregateFunction.java
File 
asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/RangeGeneratorAggregateFunction.java:

Line 46:         // TODO Auto-generated method stub
Are these still in progress?


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Gerrit-MessageType: comment
Gerrit-Change-Id: I450d0962fbeacfb2b6ab9fae0750f025ef17ba01
Gerrit-PatchSet: 14
Gerrit-Project: asterixdb
Gerrit-Branch: master
Gerrit-Owner: Wenhai Li <lwhaym...@yahoo.com>
Gerrit-Reviewer: Jenkins <jenk...@fulliautomatix.ics.uci.edu>
Gerrit-Reviewer: Jianfeng Jia <jianfeng....@gmail.com>
Gerrit-Reviewer: Preston Carman <prest...@apache.org>
Gerrit-Reviewer: Till Westmann <ti...@apache.org>
Gerrit-Reviewer: Yingyi Bu <buyin...@gmail.com>
Gerrit-Reviewer: Yingyi Bu <ying...@google.com>
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