[Backport 2.x] Change INDEX_SEARCHER threadpool to auto queue to support task resource tracking #7765
+390
−145
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Description
Backports #7502
Concurrent segment search has been backported to 2.x so we also need to backport #7502 so that we are not missing out on resource tracking whenever concurrent search is GA.
Since
Resizable
threadpool type does not exist in 2.x, we will use the same auto queue threadpool type that search threadpool uses in 2.x.Ref #7613
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Resolves #7743