Take a look at http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/docs-get.html#preference
On 11 February 2015 at 13:54, daaku gee <[email protected]> wrote: > Mark, to you point "...Any queries will use a primary or a replica without > concern." > > I understand the indexing request will always be sent to the primary shard > first but aren't queries sent to Primary (just in case replica is > momentarily out of sync). > > > On Tue, Feb 10, 2015 at 3:34 PM, Mark Walkom <[email protected]> wrote: > >> It doesn't matter as long as your shard count is balanced. >> >> The only difference between a primary and a replica is a flag that makes >> the cluster see it as a primary. Any queries will use a primary or a >> replica without concern. >> >> On 11 February 2015 at 09:11, Josh Harris <[email protected]> >> wrote: >> >>> Just getting started with ElasticSearch, and I'm taking on a couple of >>> tasks as I get more familiar with it. >>> >>> We recently restarted the six nodes in our ES cluster to perform the >>> patch for the Ghost vulnerability. We turned off reallocation, shut down >>> the individual nodes, then rebooted each node and turned reallocation back >>> on. >>> >>> We have 12 shards per index and one replica index. After the reboot of >>> all the nodes, we ended up with some nodes with three primary shards and >>> one replica index and some with three replicas and one primary shard. >>> >>> Is there a way to prevent this mismatch in the distribution of our >>> primary and replica shards? Would like to have 2 primary shards and 2 >>> replica shard per node. >>> >>> Also, is there a way to change a shard from a replica to a primary shard >>> without doing a relocation? >>> >>> -- >>> 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 [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/elasticsearch/5ef0b6f3-6acf-4014-8746-1a7d236326e3%40googlegroups.com >>> <https://groups.google.com/d/msgid/elasticsearch/5ef0b6f3-6acf-4014-8746-1a7d236326e3%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- >> 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 [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/elasticsearch/CAEYi1X8bFZY%2B8QpmD1m52fQ5B%3DystN2i9LDCbKKniUUfTQ5QwA%40mail.gmail.com >> <https://groups.google.com/d/msgid/elasticsearch/CAEYi1X8bFZY%2B8QpmD1m52fQ5B%3DystN2i9LDCbKKniUUfTQ5QwA%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- > 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 [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elasticsearch/CAH53p97D8FG7gwgoktkAR0Nj1M_0ZzC%3Dr5-VjxSYf98EqL271Q%40mail.gmail.com > <https://groups.google.com/d/msgid/elasticsearch/CAH53p97D8FG7gwgoktkAR0Nj1M_0ZzC%3Dr5-VjxSYf98EqL271Q%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAEYi1X8YLSNG9E6QjE_UMg%2BFh73kzk97%3DS-PPVXyRNK%3DV1r9qw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
