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https://issues.apache.org/jira/browse/FLINK-27998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17558411#comment-17558411
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Sergey Nuyanzin commented on FLINK-27998:
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thanks for clarification
[~jingzhang] do you mind if I help you with Calcite update
> Upgrade Calcite version to 1.30
> -------------------------------
>
> Key: FLINK-27998
> URL: https://issues.apache.org/jira/browse/FLINK-27998
> Project: Flink
> Issue Type: Technical Debt
> Components: Table SQL / API, Table SQL / Runtime
> Reporter: Martijn Visser
> Priority: Major
>
> The latest available version of Calcite is currently 1.30. We already need to
> execute the rework that was planned when upgrading to Calcite 1.27
> FLINK-20873 and when upgrading to Calcite 1.28 FLINK-21239
> When doing this upgrade, we should do this to the last available version.
> This is needed to resolve multiple bugs.
> Additional note: Flink currently uses Calcite 1.26.0 which has this note on
> the release page:
> {{Warning: Calcite 1.26.0 has severe issues with RexNode simplification
> caused by SEARCH operator ( wrong data from query optimization like in
> CALCITE-4325, CALCITE-4352, NullPointerException), so use 1.26.0 for
> development only, and beware that Calcite 1.26.0 might corrupt your data.}}
> https://calcite.apache.org/news/2020/10/06/release-1.26.0/
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