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Better description of real-memory breaker changes to aggs #57306

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Jun 1, 2020
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Better description of real-memory breaker changes to aggs #57306

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9 changes: 4 additions & 5 deletions docs/reference/release-notes/highlights-7.7.0.asciidoc
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Expand Up @@ -86,11 +86,10 @@ therefore helps interpret these results.
[float]
=== Finer memory control for bucket aggregations

We introduced a new `search.check_buckets_step_size` setting to
better control how the coordinating node allocates memory when aggregating
buckets. The allocation of buckets is now be done in steps, each step
allocating a number of buckets equal to this setting. To avoid an `OutOfMemory`
error, a parent circuit breaker check is performed on allocation.
While building buckets, aggregations will now periodically check the
real-memory circuit breaker before continuing to allocate more buckets. This
allows better responsivity to memory pressure and avoids `OutOfMemory`
situations due to allocating more buckets than the node can handle.

// end::notable-highlights[]

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