# How to change numer of shards and put mapping before bulk operation using java api?
**URL:** https://discuss.elastic.co/t/how-to-change-numer-of-shards-and-put-mapping-before-bulk-operation-using-java-api/11054
**Category:** Elasticsearch
**Created:** [March 7, 2013, 12:13pm UTC](https://discuss.elastic.co/t/how-to-change-numer-of-shards-and-put-mapping-before-bulk-operation-using-java-api/11054 "2013-03-07T12:13:56Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Jingang\_Wang](https://discuss.elastic.co/u/Jingang_Wang)
#### Post date: [March 7, 2013, 12:13pm UTC](https://discuss.elastic.co/t/how-to-change-numer-of-shards-and-put-mapping-before-bulk-operation-using-java-api/11054/1 "2013-03-07T12:13:56Z")
Hi guys,
I'm using BulkRequestBuilder api to create index in bulk, but I want to
change default number of shards and put mapping for the index, who can tell
me which api should I choose?
My bulk code is attached:
XContentBuilder xb = json string;
bulkRequest.add(client.prepareIndex("test","kba", id).setSource(xb));
\*
\*
I have tried the following api to change number of shards, but it will
result some exception.
client.admin().indices().prepareCreate("trec")
.setSettings(ImmutableSettings.settingsBuilder().put("number\_of\_shards",
10).put("number\_of\_replicas", "1"))
.execute().actionGet();
Thanks.
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### Author:  [@simonw\_2](https://discuss.elastic.co/u/simonw_2)
#### Post date: [March 7, 2013, 1:33pm UTC](https://discuss.elastic.co/t/how-to-change-numer-of-shards-and-put-mapping-before-bulk-operation-using-java-api/11054/2 "2013-03-07T13:33:58Z")
try "index.number\_of\_shards" and "index.number\_of\_replicas" instead.
simon
On Thursday, March 7, 2013 1:13:56 PM UTC+1, Jingang Wang wrote:
> Hi guys,
>
> I'm using BulkRequestBuilder api to create index in bulk, but I want to
> change default number of shards and put mapping for the index, who can tell
> me which api should I choose?
>
> My bulk code is attached:
> XContentBuilder xb = json string;
> bulkRequest.add(client.prepareIndex("test","kba", id).setSource(xb));
> \*
> \*
> I have tried the following api to change number of shards, but it will
> result some exception.
> client.admin().indices().prepareCreate("trec")
> .setSettings(ImmutableSettings.settingsBuilder().put("number\_of\_shards",
> 10).put("number\_of\_replicas", "1"))
> .execute().actionGet();
>
> Thanks.
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### Author:  [@Jingang\_Wang](https://discuss.elastic.co/u/Jingang_Wang)
#### Post date: [March 8, 2013, 1:48pm UTC](https://discuss.elastic.co/t/how-to-change-numer-of-shards-and-put-mapping-before-bulk-operation-using-java-api/11054/3 "2013-03-08T13:48:01Z")
Thanks for your reply.
I have resolved this problem.
On Thursday, March 7, 2013 9:33:58 PM UTC+8, simonw wrote:
> try "index.number\_of\_shards" and "index.number\_of\_replicas" instead.
>
> simon
>
> On Thursday, March 7, 2013 1:13:56 PM UTC+1, Jingang Wang wrote:
>
> > Hi guys,
> >
> > I'm using BulkRequestBuilder api to create index in bulk, but I want to
> > change default number of shards and put mapping for the index, who can tell
> > me which api should I choose?
> >
> > My bulk code is attached:
> > XContentBuilder xb = json string;
> > bulkRequest.add(client.prepareIndex("test","kba", id).setSource(xb));
> > \*
> > \*
> > I have tried the following api to change number of shards, but it will
> > result some exception.
> > client.admin().indices().prepareCreate("trec")
> > .setSettings(ImmutableSettings.settingsBuilder().put("number\_of\_shards",
> > 10).put("number\_of\_replicas", "1"))
> > .execute().actionGet();
> >
> > Thanks.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 2:47am UTC](https://discuss.elastic.co/t/how-to-change-numer-of-shards-and-put-mapping-before-bulk-operation-using-java-api/11054/4 "2017-07-06T02:47:32Z")