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Add fields emulation flag as no-op to search request for bwc (#82539) #82744

Merged
merged 1 commit into from
Jan 18, 2022
Merged

Add fields emulation flag as no-op to search request for bwc (#82539) #82744

merged 1 commit into from
Jan 18, 2022

Commits on Jan 18, 2022

  1. Add fields emulation flag as no-op to search request for bwc (elastic… 

    …#82539)

This change adds the 'enable_fields_emulation' flag as a REST parameter to 8.0+ nodes
in order for clients on 7.last (e.g. Kibana) to be able to use it in rolling upgrade scenarios.
We don't need any implementation of the functionality behind it on 8.0+ nodes, because
CCS is only supported for them to at most 7.last which already understands and
implements the "fields" option, so emulation on older version is not necessary.

Closes elastic#82485
    Christoph Büscher committed Jan 18, 2022
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