Hussain Towaileb has posted comments on this change.

Change subject: [ASTERIXDB-2460][FUN] Fix sum() overflow bug
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Patch Set 6:

(1 comment)

https://asterix-gerrit.ics.uci.edu/#/c/3012/6/asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/AbstractSumAggregateFunction.java
File 
asterixdb/asterix-runtime/src/main/java/org/apache/asterix/runtime/aggregates/std/AbstractSumAggregateFunction.java:

Line 55:     private double sum;
> Currently I'm only doing the sum in a local double instance but the output 
I just checked the standards and you're right, the appropriate behavior is to 
throw the overflow exception. I'll go ahead and use that implementation.

However, I would suggest that we create another sum function (something like 
sum_double) to handle calculations where an overflow is expected and make it 
return a double by default, it will be more convenient for such situations (and 
maybe provide a better performance than sum(to_double(x))?)

What do you think?


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Gerrit-MessageType: comment
Gerrit-Change-Id: I987417770b3bfbda6af29a27acc8c96dc8a99eb8
Gerrit-PatchSet: 6
Gerrit-Project: asterixdb
Gerrit-Branch: master
Gerrit-Owner: Hussain Towaileb <[email protected]>
Gerrit-Reviewer: Ali Alsuliman <[email protected]>
Gerrit-Reviewer: Anon. E. Moose #1000171
Gerrit-Reviewer: Dmitry Lychagin <[email protected]>
Gerrit-Reviewer: Hussain Towaileb <[email protected]>
Gerrit-Reviewer: James Fang <[email protected]>
Gerrit-Reviewer: Jenkins <[email protected]>
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