Benjamin Trent 752ee0288e
[7.x] [ML] optimize delete expired snapshots (#63134) (#63200)
* [ML] optimize delete expired snapshots (#63134)

When deleting expired snapshots, we do an individual delete action per snapshot per job.

We should instead gather the expired snapshots and delete them in a single call.

This commit achieves this and a side-effect is there is less audit log spam on nightly cleanup

closes https://github.com/elastic/elasticsearch/issues/62875
2020-10-02 13:24:36 -04:00
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