Thanks for your answer~ May be when 10 servers extends to 100 servers it can work ,but I‘m afraid that if we do reindex to 100 servers it may cost a long time and huge I/O resources.We need to stop the service for a long time and all the data need to transport from old index to new one.
Is there any easier way to horizontal expansion？ P.S. I cann’t visit https://discuss.elastic.co/ <https://discuss.elastic.co/> today .It is blank all the time. (･ˇ_ˇ･) 在 2015年5月28日星期四 UTC+8下午3:05:13，Mark Walkom写道： > > You don't want 400 shards on 10 servers. You do want the ability to > reindex to allow you to reshard to deal with this issue. > Logstash 1.5 can do this very easily, see this example > <https://gist.github.com/markwalkom/8a7201e3f6ea4354ae06>. > > However you probably don't want an index with 200 shards irrespective, you > may want to take a look at your data structure and split things out. > > > PS - We're moving to https://discuss.elastic.co/, please join us there > for any future discussions! > > > > On 28 May 2015 at 12:46, <xinm...@163.com <javascript:>> wrote: > >> >> Hi， >> >> I feel very confuse when deciding the number of primary shards at >> beginning. >> >> As we know the number of shards and replicas can be defined per index at >> the time the index is created. After the index is created, we may change >> the number of replicas dynamically anytime but we cannot change the number >> of primary shards after-the-fact. Our ES project may be run as trial >> version at beginning an it is only 10 machines in cluster. However, if the >> project run in production environment, the machine magnitude must >> increase and there will have 200 or more machines. >> >> How can we decide shards number at beginning? Is it encourage to run 400 >> or more shards in 10 machines, will it reduce the performance of >> cluster? >> >> >> Thank you for reading and look forward to your suggestions. >> >> >> -- >> Please update your bookmarks! We have moved to >> https://discuss.elastic.co/ >> --- >> 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 <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/elasticsearch/a6eb715a-6543-4882-8635-81a0d22ca1d7%40googlegroups.com >> >> <https://groups.google.com/d/msgid/elasticsearch/a6eb715a-6543-4882-8635-81a0d22ca1d7%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > > -- Please update your bookmarks! We have moved to https://discuss.elastic.co/ --- 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+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/65cd6e3e-97f1-416e-8f97-e34a8dd7671e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
