How to set max_buckets to overcome Too Many Buckets Exception

[Whatapalaver]

I am trying to expand the size of my aggregations but am falling foul of the 10000 max buckets.
I can see that I can override this with max_buckets but it is not clear to me where I set this.

I have tried:
s = s.max_buckets(size=65000)
and
s = s.max_buckets(65000)

[Telomeraz]

@Whatapalaver You cannot expand the size of buckets more than 10.000. To set size:
s = s.aggs.bucket("per_author", "terms", field="author.raw", size=10000)

However, you can actually get more than 10.000 bucket using Composite Aggregation