Yingyi Bu has posted comments on this change.

Change subject: ASTERIXDB-1255: Fix for potential issues related to object 
creation in Jaccard Similarity evaluation
......................................................................


Patch Set 2:

(1 comment)

https://asterix-gerrit.ics.uci.edu/#/c/586/2/asterix-runtime/src/main/java/org/apache/asterix/runtime/evaluators/common/SimilarityJaccardEvaluator.java
File 
asterix-runtime/src/main/java/org/apache/asterix/runtime/evaluators/common/SimilarityJaccardEvaluator.java:

Line 243:             return;
> Yes, you are absolutely right, I still thought that it was run for every li
>> the list size is larger than the original default value (which is in this 
>> case 100)?

There could be more hash conflicts, which can hurt the performance a bit.
OK, dynamic table size would be great but you might need to allow the 
BinaryHashMap to reset table size.  Currently line 241 will return directly. 
But I can see that the current hash table size is better than a fixed value 100.

So maybe you revert the object pool change but keep the dynamic size change?


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Gerrit-MessageType: comment
Gerrit-Change-Id: I08c550d35d864df08792369d38ff81012e3976af
Gerrit-PatchSet: 2
Gerrit-Project: asterixdb
Gerrit-Branch: master
Gerrit-Owner: Heri Ramampiaro <[email protected]>
Gerrit-Reviewer: Chen Li <[email protected]>
Gerrit-Reviewer: Heri Ramampiaro <[email protected]>
Gerrit-Reviewer: Jenkins <[email protected]>
Gerrit-Reviewer: Yingyi Bu <[email protected]>
Gerrit-HasComments: Yes

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