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https://issues.apache.org/jira/browse/TAJO-2135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15267863#comment-15267863
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ASF GitHub Bot commented on TAJO-2135:
--------------------------------------
Github user blrunner commented on a diff in the pull request:
https://github.com/apache/tajo/pull/1009#discussion_r61828973
--- Diff:
tajo-core/src/main/java/org/apache/tajo/engine/planner/physical/DistinctGroupbySecondAggregationExec.java
---
@@ -212,6 +212,7 @@ public Tuple next() throws IOException {
prevKeyTuple = getKeyTuple(prevKeyTupleMap, keyTuple.getValues());
prevTuple.put(tuple.getValues());
+ prevTuple.put(tuple.getValues());
--- End diff --
Why you use same codes again?
> Invalid join result when join key columns contain nulls
> -------------------------------------------------------
>
> Key: TAJO-2135
> URL: https://issues.apache.org/jira/browse/TAJO-2135
> Project: Tajo
> Issue Type: Bug
> Affects Versions: 0.11.0
> Reporter: Jihoon Son
> Assignee: Jihoon Son
> Priority: Critical
> Fix For: 0.12.0
>
>
> You can simply reproduce this bug as follows. The correct answer of the below
> query is 20965674.
> {noformat}
> tpcds100> select count(*) from store_sales, store_returns
> where
> ss_customer_sk = sr_customer_sk
> and ss_item_sk = sr_item_sk
> ;
> [=========================================>] 100% 33.315 sec
> ?count
> -------------------------------
> 101145653
> (1 rows, 33.315 sec, 16 B selected)
> {noformat}
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