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https://issues.apache.org/jira/browse/TAJO-177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13763035#comment-13763035
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Hyunsik Choi commented on TAJO-177:
-----------------------------------
This bug seems to relate to TAJO-175. Thank you for nice finding.
{noformat}
[INFO] -------------------------------------------------------------
[ERROR]
/home/hyunsik/Code/tajo/tajo/tajo-core/tajo-core-storage/src/main/java/org/apache/tajo/storage/FrameTuple.java:[36,7]
error: FrameTuple is not abstract and does not override abstract method
clone() in Tuple
{noformat}
But, clone() method need to be add to FrameTuple too.
> Call by reference bug in MergeJoinExec
> --------------------------------------
>
> Key: TAJO-177
> URL: https://issues.apache.org/jira/browse/TAJO-177
> Project: Tajo
> Issue Type: Bug
> Components: physical operator
> Reporter: Jihoon Son
> Assignee: Jihoon Son
> Fix For: 0.2-incubating
>
> Attachments: TAJO-177.patch
>
>
> While comparing and storing tuples in a list temporally, their copies should
> be stored.
> This issue includes following works
> * Create a function clone() in Tuple and VTuple
> * Change from using call by reference to using call by value
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