Which ES cluster would give better performance? 1 shard 2 replicas or normal 2 shards

Which cluster would give better read performance on two separate servers?

ES cluster Foo
[] serverA - 1 primary shard
[] serverB - 2 replica Shards

ES cluster Bar
[] serverA - 1 primary shard and 1 replica shard
[] serverB - 1 primary shard and 1 replica shard

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You won't ever be able to store two of the same replicas shards on the same
server, so your first example won't work.

On 22 January 2015 at 05:17, Darin Hensley darin.hensley@gmail.com wrote:

Which cluster would give better read performance on two separate servers?

ES cluster Foo
[] serverA - 1 primary shard
[] serverB - 2 replica Shards

ES cluster Bar
[] serverA - 1 primary shard and 1 replica shard
[] serverB - 1 primary shard and 1 replica shard

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On http://www.elasticsearch.org/guide/en/elasticsearch/guide/current/replica-shards.html
in "Figure 52. Adjust the number of replicas to balance the load between
nodes" they show Node 3 which contains only 2 replica shards. They state in
it "The fact that node 3 holds two replicas and no primaries is not
important."

On Wednesday, January 21, 2015 at 10:17:38 AM UTC-6, Darin Hensley wrote:

Which cluster would give better read performance on two separate servers?

ES cluster Foo
[] serverA - 1 primary shard
[] serverB - 2 replica Shards

ES cluster Bar
[] serverA - 1 primary shard and 1 replica shard
[] serverB - 1 primary shard and 1 replica shard

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Oh, I see what you mean...sorry about that. Thanks!

On Wednesday, January 21, 2015 at 10:17:38 AM UTC-6, Darin Hensley wrote:

Which cluster would give better read performance on two separate servers?

ES cluster Foo
[] serverA - 1 primary shard
[] serverB - 2 replica Shards

ES cluster Bar
[] serverA - 1 primary shard and 1 replica shard
[] serverB - 1 primary shard and 1 replica shard

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