4 primary shards instead of 3


(Eddy Meds) #1

Hello

I created an index with 3 primarys shards but ElasticSearch return and
indicate that there are 4 primary shards.

Deleting the data in the cluster

DELETE /_all

Create an index with 3 primary shards with 1 replica each

PUT /blogs
{
"settings" : {
"number_of_shards" : 3,
"number_of_replicas" : 1
}
}

Retrieve the cluster health

GET /_cluster/health

And here is the response :

{
"cluster_name": "clus",
"status": "yellow",
"timed_out": false,
"number_of_nodes": 1,
"number_of_data_nodes": 1,
"active_primary_shards": 4,
"active_shards": 4,
"relocating_shards": 0,
"initializing_shards": 0,
"unassigned_shards": 4
}

I thought that there was only the number of replica shards that could
change and that the number of primary shards was fixed at the time that the
index was created, where does come from the fourth primary shard ?

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(Mark Walkom) #2

Are you using marvel at all? It uses an index with a single shard by
default.

Regards,
Mark Walkom

Infrastructure Engineer
Campaign Monitor
email: markw@campaignmonitor.com
web: www.campaignmonitor.com

On 29 August 2014 02:04, Eddy Meds zqckfair@gmail.com wrote:

Hello

I created an index with 3 primarys shards but ElasticSearch return and
indicate that there are 4 primary shards.

Deleting the data in the cluster

DELETE /_all

Create an index with 3 primary shards with 1 replica each

PUT /blogs
{
"settings" : {
"number_of_shards" : 3,
"number_of_replicas" : 1
}
}

Retrieve the cluster health

GET /_cluster/health

And here is the response :

{
"cluster_name": "clus",
"status": "yellow",
"timed_out": false,
"number_of_nodes": 1,
"number_of_data_nodes": 1,
"active_primary_shards": 4,
"active_shards": 4,
"relocating_shards": 0,
"initializing_shards": 0,
"unassigned_shards": 4
}

I thought that there was only the number of replica shards that could
change and that the number of primary shards was fixed at the time that the
index was created, where does come from the fourth primary shard ?

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(Eddy Meds) #3

Yes thanks, that was Marvel !

On Thursday, August 28, 2014 6:04:39 PM UTC+2, Eddy Meds wrote:

Hello

I created an index with 3 primarys shards but ElasticSearch return and
indicate that there are 4 primary shards.

Deleting the data in the cluster

DELETE /_all

Create an index with 3 primary shards with 1 replica each

PUT /blogs
{
"settings" : {
"number_of_shards" : 3,
"number_of_replicas" : 1
}
}

Retrieve the cluster health

GET /_cluster/health

And here is the response :

{
"cluster_name": "clus",
"status": "yellow",
"timed_out": false,
"number_of_nodes": 1,
"number_of_data_nodes": 1,
"active_primary_shards": 4,
"active_shards": 4,
"relocating_shards": 0,
"initializing_shards": 0,
"unassigned_shards": 4
}

I thought that there was only the number of replica shards that could
change and that the number of primary shards was fixed at the time that the
index was created, where does come from the fourth primary shard ?

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To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/e998670b-8a8d-4ecd-ad6b-a92799f1bebf%40googlegroups.com.
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(system) #4