How does Elasticsearch map Integer doc IDs to shards? What algorithm does it use? I've been digging around but haven't seemed to find the answer. For context, every document we have has an id that's a row id from postgres. We're seeing skew on our nodes, likely because many rows have been deleted …

Look here A document is routed to a particular shard in an index using the following formula: shard_num = hash(_routing) % num_primary_shards The default value used for _routing is the document’s _id . So in your case you are using your row number as _id if I understand As to the exact hash …

How does Elasticsearch map Integer doc IDs to shards

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warkolm (Mark Walkom) January 16, 2021, 11:16pm 2

Do the responses in this topic help? What algorithm is ElasticSearch create Document _Id based on?Could somebody answer me，plz

Topic		Replies	Views
What algorithm is ElasticSearch create Document _Id based on?Could somebody answer me，plz Elasticsearch	3	6690	February 28, 2019
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How does Elasticsearch map Integer doc IDs to shards

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