[float]
[[breaking_80_ilm_changes]]
=== Index Lifecycle Management changes

//NOTE: The notable-breaking-changes tagged regions are re-used in the
//Installation and Upgrade Guide

//tag::notable-breaking-changes[]

// end::notable-breaking-changes[]

[float]
[[ilm-poll-interval-limit]]
==== `indices.lifecycle.poll_interval` must be greater than 1 second

The setting `indices.lifecycle.poll_interval`, if set too low, can cause
excessive load on a cluster. This setting must now be set to 1 second or higher.

[float]
[[ilm-hlrc-rename]]
==== `indexlifecycle` packages renamed to `ilm`

In the high level REST client, the `indexlifecycle` package has been
renamed to `ilm` to match the package rename inside the Elasticsearch code.
