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https://issues.apache.org/jira/browse/CALCITE-2760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16732166#comment-16732166
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Andrei Sereda commented on CALCITE-2760:
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[~michaelmior] this should be fixed after CALCITE-2755
We're now keeping mapping between expression and item call. For more context
see [thread on dev
list|https://lists.apache.org/thread.html/91ac1a5215e22afa9abee924426e05cfbcf257aae6858741308ed7b8@%3Cdev.calcite.apache.org%3E]
> Elasticsearch adapter can't sort on umapped fields
> --------------------------------------------------
>
> Key: CALCITE-2760
> URL: https://issues.apache.org/jira/browse/CALCITE-2760
> Project: Calcite
> Issue Type: Bug
> Components: elasticsearch-adapter
> Affects Versions: 1.17.0
> Reporter: Michael Mior
> Assignee: Julian Hyde
> Priority: Major
>
> When trying to sort on unmapped fields, the adapter throws an exception. It
> seems like {{ElasticsearchSortRule}} should check if the field is mapped
> before it is applied so the sort can be performed by Calcite if Elasticsearch
> can't do it.
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