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https://issues.apache.org/jira/browse/DRILL-5457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16014750#comment-16014750
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ASF GitHub Bot commented on DRILL-5457:
---------------------------------------

Github user paul-rogers commented on a diff in the pull request:

    https://github.com/apache/drill/pull/822#discussion_r117105800
  
    --- Diff: 
exec/java-exec/src/main/java/org/apache/drill/exec/planner/physical/AggPrelBase.java
 ---
    @@ -51,7 +51,7 @@
     
     public abstract class AggPrelBase extends DrillAggregateRelBase implements 
Prel {
     
    -  protected static enum OperatorPhase {PHASE_1of1, PHASE_1of2, PHASE_2of2};
    +  public static enum OperatorPhase {PHASE_1of1, PHASE_1of2, PHASE_2of2};
    --- End diff --
    
    Nit, but enum values are constants and so convention is all upper case: 
maybe: PHASE1OF2 or PHASE1_OF_2 or PHASE_1_OF_2...
    
    Not a big deal; the current form is a bit easier to read...


> Support Spill to Disk for the Hash Aggregate Operator
> -----------------------------------------------------
>
>                 Key: DRILL-5457
>                 URL: https://issues.apache.org/jira/browse/DRILL-5457
>             Project: Apache Drill
>          Issue Type: Improvement
>          Components: Execution - Relational Operators
>    Affects Versions: 1.10.0
>            Reporter: Boaz Ben-Zvi
>            Assignee: Boaz Ben-Zvi
>             Fix For: 1.11.0
>
>
> Support gradual spilling memory to disk as the available memory gets too 
> small to allow in memory work for the Hash Aggregate Operator.



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