# Is ES support shard splitting on live or offline? or would support in futrue? **URL:** \ **Category:** Elasticsearch\ **Created:** [July 4, 2013, 6:59am UTC](https://discuss.elastic.co/t/is-es-support-shard-splitting-on-live-or-offline-or-would-support-in-futrue/12657 "2013-07-04T06:59:21Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![dancer](https://avatars.discourse-cdn.com/v4/letter/d/e5b9ba/32.png) [@dancer](https://discuss.elastic.co/u/dancer)\ **Post date:** [July 4, 2013, 6:59am UTC](https://discuss.elastic.co/t/is-es-support-shard-splitting-on-live-or-offline-or-would-support-in-futrue/12657/1 "2013-07-04T06:59:21Z")
I find out solr is support that as \* [http://architects.dzone.com/articles/solr-43-shard-splitting-quick\*](http://architects.dzone.com/articles/solr-43-shard-splitting-quick*)[http://architects.dzone.com/articles/solr-43-shard-splitting-quick](http://architects.dzone.com/articles/solr-43-shard-splitting-quick) says, but I want use ES. how ES support for that, and, any issue for that problem? -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![Rafal\_Kuc\_3](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rafal_kuc_3/32/799_2.png) [@Rafal\_Kuc\_3](https://discuss.elastic.co/u/Rafal_Kuc_3)\ **Post date:** [July 4, 2013, 7:09am UTC](https://discuss.elastic.co/t/is-es-support-shard-splitting-on-live-or-offline-or-would-support-in-futrue/12657/2 "2013-07-04T07:09:45Z")
Hello! Currently ElasticSearch doesn't support shard splitting. You can overshard - creating more shards during index creation, but you can't split shards. _--_ Regards, Rafał Kuć Sematext :: [http://sematext.com/](http://sematext.com/) _:: Solr - Lucene - ElasticSearch_ I find out solr is support that as [http://architects.dzone.com/articles/solr-43-shard-splitting-quick](http://architects.dzone.com/articles/solr-43-shard-splitting-quick) says, but I want use ES. how ES support for that, and, any issue for that problem? -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\ **Post date:** [July 4, 2013, 7:15am UTC](https://discuss.elastic.co/t/is-es-support-shard-splitting-on-live-or-offline-or-would-support-in-futrue/12657/3 "2013-07-04T07:15:35Z")
Hey, elasticsearch does not allow to split shards at the moment. Maybe however aliases and overallocation can help you to work around. Instead of waiting until a shard grows beyond a manageable size for one node (which is the reason you want to split it) you should define more shards than expected for your index (this is one of the reasons there are 5 shards by default per index). In addition if your index grows beyond that maximum shard size, you can create another index and use an alias to group them together. Why is this similar? Because it is the same if you query 10 indices with one shard each or or two indices with 5 five shards. Hope this helps. --Alex On Thu, Jul 4, 2013 at 8:59 AM, dancer [chuanhua.deng@gmail.com](mailto:chuanhua.deng@gmail.com) wrote: > I find out solr is support that as \* > [http://architects.dzone.com/articles/solr-43-shard-splitting-quick](http://architects.dzone.com/articles/solr-43-shard-splitting-quick)\*[http://architects.dzone.com/articles/solr-43-shard-splitting-quick](http://architects.dzone.com/articles/solr-43-shard-splitting-quick) says, > but I want use ES. > how ES support for that, and, any issue for that problem? > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![dancer](https://avatars.discourse-cdn.com/v4/letter/d/e5b9ba/32.png) [@dancer](https://discuss.elastic.co/u/dancer)\ **Post date:** [July 4, 2013, 9:15am UTC](https://discuss.elastic.co/t/is-es-support-shard-splitting-on-live-or-offline-or-would-support-in-futrue/12657/4 "2013-07-04T09:15:08Z")
Thanks your reply. It may be a good way for that. 在 2013年7月4日星期四UTC+8下午3时15分35秒，Alexander Reelsen写道： > Hey, > > elasticsearch does not allow to split shards at the moment. Maybe however > aliases and overallocation can help you to work around. Instead of waiting > until a shard grows beyond a manageable size for one node (which is the > reason you want to split it) you should define more shards than expected > for your index (this is one of the reasons there are 5 shards by default > per index). In addition if your index grows beyond that maximum shard size, > you can create another index and use an alias to group them together. Why > is this similar? Because it is the same if you query 10 indices with one > shard each or or two indices with 5 five shards. > > Hope this helps. > > --Alex > > On Thu, Jul 4, 2013 at 8:59 AM, dancer \<[chuanh...@gmail.com](mailto:chuanh...@gmail.com) \\>wrote: > > > I find out solr is support that as \* > > [http://architects.dzone.com/articles/solr-43-shard-splitting-quick](http://architects.dzone.com/articles/solr-43-shard-splitting-quick)\*[http://architects.dzone.com/articles/solr-43-shard-splitting-quick](http://architects.dzone.com/articles/solr-43-shard-splitting-quick) says, > > but I want use ES. > > how ES support for that, and, any issue for that problem? > > > > -- > > You received this message because you are subscribed to the Google Groups > > "elasticsearch" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to [elasticsearc...@googlegroups.com](mailto:elasticsearc...@googlegroups.com) \. > > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 2:28am UTC](https://discuss.elastic.co/t/is-es-support-shard-splitting-on-live-or-offline-or-would-support-in-futrue/12657/5 "2017-07-06T02:28:13Z")