Hey Peter, Did you find a resolution for Hashmap mappings? Looking for the same thing.
Thanks, Sangita. On Tuesday, January 14, 2014 9:03:35 AM UTC-5, Peter Webber wrote: > > > Hi Alex, > > thanks for your reply first of all. The problem is that I will have > millions of keys, and that ES creates a mapping for each. That will bloat > the mappings data structure and probably lead to some memory and/or > performance issues somewhere (I don't know enough about ES internals, to > know precisely where, but it cannot be good to have a few million entries > in the mapping where one would do.) > > Hope that helps! > Peter > > > > Am Dienstag, 14. Januar 2014 13:01:22 UTC+1 schrieb Alexander Reelsen: >> >> Hey Peter, >> >> can you tell me, where your problem with the above approach actually is? >> You feed a number of key/value pairs into elasticsearch, each key and each >> value is evaluated by its type and then put into the mapping, as each key >> becomes an own field in elasticsearch, which can be searched for. Wondering >> why this is a problem for you? Or why do you want to avoid that? >> >> Also, where and how do you want to change the mapping to? >> >> I am a bit confused what and why you are expecting to be different than >> it actually is. Maybe you should not think in java data structures but >> rather in JSON, which is being indexed and needs to create a mapping in >> order to be able to search for it. Happy to help, if I understand what you >> are trying to do. Please elaborate. >> >> >> --Alex >> >> >> On Mon, Jan 13, 2014 at 11:15 AM, Oliver B. Fischer <[email protected] >> > wrote: >> >>> Hi Peter, >>> >>> ES allows you to defined dynamic mappings there you can determine the >>> mapping of a property based on the evaluation of some conditions. >>> >>> http://www.elasticsearch.org/guide/en/elasticsearch/ >>> reference/current/mapping-dynamic-mapping.html >>> >>> Oliver >>> >>> Am 12.01.14 17:16, schrieb Peter Webber: >>> >>> >>>> I had a look at the mapping ES created automatically for one of my >>>> indices, and found something that's not quite right: >>>> >>>> .... >>>> ||| "annotations"| |: { | >>>> |||"properties"| |: { | >>>> |||"ids"| |: { | >>>> |||"properties"| |: { | >>>> |||"hashMap"| |: { | >>>> |||"properties"| |: { | >>>> |||"N_10290607"| |: { | >>>> |||"type"| |: ||"double"| >>>> |||}, | >>>> |||"A_1038408"| |: { | >>>> |||"type"| |: ||"double"| >>>> |||}, | >>>> |||"A_11585994"| |: { | >>>> |||"type"| |: ||"double"| >>>> |||}, | >>>> |||"B_1245677"| |: { | >>>> |||"type"| |: ||"double"| >>>> |||}, | >>>> |||"B_1269810"| |: { | >>>> |||"type"| |: ||"double"| >>>> |||}, | >>>> |||"C_15680034"| |: { | >>>> |||"type"| |: ||"double"| >>>> |||}, | >>>> |||"N_1654171"| |: { | >>>> |||"type"| |: ||"double"| >>>> |||}, >>>> ... >>>> >>>> I use Gson to convert Java classes to Json and then directly put them >>>> into ES. One of the classes I use has a HashMap<String, Double> as a >>>> central piece, where it stores its key-value pairs. It's really just >>>> that: the keys are stings, the values doubles. ES however creates a >>>> mapping for every key of the hashmap as you can see above. >>>> >>>> Does someone here know what mapping I need to define to avoid that? >>>> >>>> Also: Can I change this mapping on the already existing index, or do I >>>> have to create a new index, then create a mapping, then copy over the >>>> data from the old index? >>>> >>>> Many Thanks! >>>> | >>>> >>>> -- >>>> 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/4cfa6af7- >>>> 4329-4edc-b4dc-385a4a38714d%40googlegroups.com. >>>> For more options, visit 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 [email protected]. >>> To view this discussion on the web visit https://groups.google.com/d/ >>> msgid/elasticsearch/52D3BCAD.5060208%40swe-blog.net. >>> >>> For more options, visit 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/9fd97086-4547-4c5e-9572-67e02f616582%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
