[7.8] Fix delete_expired_data/nightly maintenance when many model snapshots need deleting (#57041)#57146
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davidkyle merged 2 commits intoelastic:7.8from May 27, 2020
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… need deleting (elastic#57041) The queries performed by the expired data removers pull back entire documents when only a few fields are required. For ModelSnapshots in particular this is a problem as they contain quantiles which may be 100s of KB and the search size is set to 10,000. This change makes the search more efficient by only requesting the fields needed to work out which expired data should be deleted.
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Pinging @elastic/ml-core (:ml) |
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Backports the following commits to 7.8: