Automatic index count limit on data stream

OpenSearch
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1

Is it possible to limit the number of backing indexes on a data stream, automatically removing older indexes when new ones are created?

I tried to use an ISM policy but can’t find any condition to count the number of existing indexes on a data stream.

Thanks

2

@pjs ISM policy transitions are based on the number of documents, index size, and index age. It can’t be configured against a number of indices.