Hi Yifan, Nothing dynamic, but you can increase the number of terms collected on each shard to increase the accuracy [1]. Might also want to play with the shard_min_doc_count value if you know certain shards have a low hit count and are throwing off the aggregations [2].
[1] http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-aggregations-bucket-terms-aggregation.html#_shard_size [2] http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-aggregations-bucket-terms-aggregation.html#_minimum_document_count Thanks, Matt Weber On Tue, Sep 16, 2014 at 12:36 PM, Yifan Wang <yifan.wang....@gmail.com> wrote: > It seems to be a common problem that the top N results returned from an > aggregation query is inaccurate due to uneven distribution of matching > documents on different shards, because ES will collect top N buckets from > each shard no matter actually how many hits are on each shard. It is very > often we collect buckets that should have not been collected on some > shards, but we missed buckets that should have collected on some others. > > Is there a way we can collect buckets based on a dynamic "weight", for > example "total hits", on that shard? > > Thanks in advance. > > -- > 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/e78571f9-d3e3-4d7c-a60e-d1a2052db397%40googlegroups.com > <https://groups.google.com/d/msgid/elasticsearch/e78571f9-d3e3-4d7c-a60e-d1a2052db397%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 elasticsearch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAJ3KEoCWieyr%3DW%2B_T0wxPr9L6_USLMKNQuMTNx0MOBQAaZ_VQA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
