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https://issues.apache.org/jira/browse/IGNITE-18213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17683853#comment-17683853
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Andrey Mashenkov commented on IGNITE-18213:
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[~korlov] LGTM.
I left few minor suggestions, feel free to ignore them.
Also, please fix the conflicts.
> Sql. Make exchange rewindable
> -----------------------------
>
> Key: IGNITE-18213
> URL: https://issues.apache.org/jira/browse/IGNITE-18213
> Project: Ignite
> Issue Type: Improvement
> Components: sql
> Reporter: Konstantin Orlov
> Assignee: Konstantin Orlov
> Priority: Major
> Labels: ignite-3
> Time Spent: 20m
> Remaining Estimate: 0h
>
> This causes the whole table being send over the network and being stored in
> the spool node.
> This could be improved by making the exchange operator rewindable.
> Need to introduce new type of message similar to InboxCloseMessage, but for
> 'rewind' operation. The message should contain list of correlated variables.
> Outbox, in turn, should accept this message, update correlation variables in
> the local context with the received one, and rewind the local execution tree.
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