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https://issues.apache.org/jira/browse/IGNITE-9233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16588496#comment-16588496
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Ivan Pavlukhin edited comment on IGNITE-9233 at 8/27/18 2:20 PM:
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MERGE behavior was broken in such way that it acts like UPDATE.


was (Author: pavlukhin):
MERGE behavior was broken it such way that it acts like UPDATE.

> MVCC SQL: False write conflicts on fast updates
> -----------------------------------------------
>
>                 Key: IGNITE-9233
>                 URL: https://issues.apache.org/jira/browse/IGNITE-9233
>             Project: Ignite
>          Issue Type: Bug
>          Components: mvcc, sql
>            Reporter: Ivan Pavlukhin
>            Assignee: Ivan Pavlukhin
>            Priority: Major
>         Attachments: MvccInsertDeleteConcurrent.java
>
>
> Currently is possible to encounter query failure e.g. in case when DELETE 
> with directly specified key encounters write conflict for row which is 
> created by concurrent INSERT. From SNAPSHOT isolation point of view DELETE 
> either should not see a row and do nothing or should remove a row gracefully.



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