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by praseodym 2614 days ago
This is exactly why Elasticsearch has a soft limit of 1000 shards per node since version 7.0: https://www.elastic.co/guide/en/elasticsearch/reference/7.0/...

This benchmark used 4605 shards (5 per index) on a single node, which is way above the recommended number.

Also, to prevent oversharding, the default number of shards per index has been changed to 1 in 7.0.