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https://issues.apache.org/jira/browse/TINKERPOP-1180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15191011#comment-15191011
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ASF GitHub Bot commented on TINKERPOP-1180:
-------------------------------------------

Github user okram commented on a diff in the pull request:

    https://github.com/apache/incubator-tinkerpop/pull/254#discussion_r55836702
  
    --- Diff: 
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/sideEffect/GroupSideEffectStep.java
 ---
    @@ -77,7 +77,7 @@ public void modulateBy(final Traversal.Admin<?, ?> 
kvTraversal) {
     
         @Override
         protected void sideEffect(final Traverser.Admin<S> traverser) {
    -        final Map<K, Object> map = new HashMap<>();
    +        final Map<K, Object> map = new HashMap<>(1);
    --- End diff --
    
    That line of code is as you have it in master/. Was done in another PR. 
Also, the load factor can't be 1.0 as that map will presumably grow on 
reduction.


> Add more optimized binary operators to Operator.
> ------------------------------------------------
>
>                 Key: TINKERPOP-1180
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-1180
>             Project: TinkerPop
>          Issue Type: Improvement
>          Components: process
>    Affects Versions: 3.1.1-incubating
>            Reporter: Marko A. Rodriguez
>
> We currently have {{Operator}} enum which has nice operators like {{add}}, 
> {{assign}}, {{sum}}, {{max}}, {{min}}, etc. The problem with lots of the 
> number-based implementations is that they reason about the number format 
> using {{NumberHelper}}. I think we should add {{sumLong}}, {{sumInteger}}, 
> and the like to allow classes the leverage {{Operator}} to bypass 
> number-type-reasoning when they know it will be a long, integer, etc.
> This is important for {{GraphComputer.Memory}} where reducers are binary 
> operators and we use {{Operator}}.



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