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[7.17] Fix FLS for frozen tier (#82521) #82566

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merged 2 commits into from
Jan 14, 2022

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ywelsch
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@ywelsch ywelsch commented Jan 13, 2022

Backports the following commits to 7.17:

Field level security was interacting in bad ways with the can-match phase on frozen tier shards (interaction between
FieldSubsetReader and RewriteCachingDirectoryReader). This made can-match phase fail, which in the normal case
would result in extra load on the frozen tier, and in the extreme case (in interaction with elastic#51708) made searches fail.

This is a bug that was indirectly introduced by elastic#78988.

Closes elastic#82044
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ywelsch commented Jan 14, 2022

@elasticmachine run elasticsearch-ci/part-2

(random test failure in a world of unstable builds)

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ywelsch commented Jan 14, 2022

@elasticmachine update branch

@ywelsch ywelsch merged commit 99c802f into elastic:7.17 Jan 14, 2022
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3 participants