I have a cluster with 30 nodes and a lot of indices with small number of primary shards . Let's say 800 indices . most indices only have 1 or 2 primary shards.
I want to know how elasticsearch cluster distribute data across the cluster such a lot of small indices?
Does all nodes in cluster receive data evenly ? or near evenly ?
It does it based on shard count per node, so that each node has a similar/same number of shards.
It doesn't look at the shard size, but does take the node's disk space into account.
Thank you @warkolm .
The shards going to re-balance automatically if I add more nodes in the future ?
Yes they will.
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