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https://issues.apache.org/jira/browse/FLINK-2237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15140908#comment-15140908
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ASF GitHub Bot commented on FLINK-2237:
---------------------------------------
Github user ggevay commented on a diff in the pull request:
https://github.com/apache/flink/pull/1517#discussion_r52466336
--- Diff:
flink-runtime/src/test/java/org/apache/flink/runtime/operators/hash/HashTablePerformanceComparison.java
---
@@ -102,7 +102,7 @@ public void testCompactingHashMapPerformance() {
System.out.println("Starting update...");
start = System.currentTimeMillis();
while(updater.next(target) != null) {
- target.setValue(target.getValue()*-1);
--- End diff --
`target.getValue()` is always 0 at this point. (see the 6th paragraph in
the PR opening comment)
> Add hash-based Aggregation
> --------------------------
>
> Key: FLINK-2237
> URL: https://issues.apache.org/jira/browse/FLINK-2237
> Project: Flink
> Issue Type: New Feature
> Reporter: Rafiullah Momand
> Assignee: Gabor Gevay
> Priority: Minor
>
> Aggregation functions at the moment are implemented in a sort-based way.
> How can we implement hash based Aggregation for Flink?
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