>From Ali Alsuliman <[email protected]>:

Ali Alsuliman has posted comments on this change. ( 
https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/4223 )

Change subject: [NO ISSUE][RT] Randomized Sampling
......................................................................


Patch Set 1:

(9 comments)

https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/4223/1//COMMIT_MSG
Commit Message:

https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/4223/1//COMMIT_MSG@7
PS1, Line 7: NO ISSUE
Let's use ASTERIXDB-2684


https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/4223/1/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/LocalSamplingAggregateDescriptor.java
File 
asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/LocalSamplingAggregateDescriptor.java:

https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/4223/1/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/LocalSamplingAggregateDescriptor.java@102
PS1, Line 102: ArrayList
minor, let's make this private final List<ArrayBackedValueStorage>


https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/4223/1/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/LocalSamplingAggregateDescriptor.java@103
PS1, Line 103: private
minor, let's make this private final


https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/4223/1/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/LocalSamplingAggregateDescriptor.java@104
PS1, Line 104: int
minor, private int count = 0;


https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/4223/1/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/LocalSamplingAggregateDescriptor.java@126
PS1, Line 126: samples.clear();
Let's reset the count, here, too. count = 0;


https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/4223/1/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/LocalSamplingAggregateDescriptor.java@127
PS1, Line 127: rangeMapBits.reset();
             :             // write a dummy integer at the beginning to be 
filled later with the actual number of samples taken
             :             IntegerSerializerDeserializer.write(0, 
rangeMapBits.getDataOutput());
With the new changes, we don't need these lines here, I think. Let's move them 
down into the finish() (in the else)


https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/4223/1/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/LocalSamplingAggregateDescriptor.java@141
PS1, Line 141: storage
minor, let's rename this to sampleStorage (just to not confuse it with the 
already existing instance variable)


https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/4223/1/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/LocalSamplingAggregateDescriptor.java@152
PS1, Line 152: storage
same here


https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/4223/1/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/LocalSamplingAggregateDescriptor.java@179
PS1, Line 179: IntegerPointable.setInteger(rangeMapBits.getByteArray(), 
rangeMapBits.getStartOffset(), samples.size());
After moving the code in the init():
rangeMapBits.reset();
IntegerSerializerDeserializer.write(samples.size(), 
rangeMapBits.getDataOutput());



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Gerrit-Project: asterixdb
Gerrit-Branch: master
Gerrit-Change-Id: I8889f49b127773d90c6ef8a9f09d8993a4da68ac
Gerrit-Change-Number: 4223
Gerrit-PatchSet: 1
Gerrit-Owner: Mikhail Lychagin <[email protected]>
Gerrit-Reviewer: Anon. E. Moose #1000171
Gerrit-Reviewer: Jenkins <[email protected]>
Gerrit-CC: Ali Alsuliman <[email protected]>
Gerrit-Comment-Date: Mon, 02 Dec 2019 22:49:43 +0000
Gerrit-HasComments: Yes
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