Elasticsearch 7 Composite Aggregation
This applies to: Visual Data Discovery
Composite aggregations are implemented by Elasticsearch 7 connectors. This support optimizes aggregations of Elasticsearch 7 data, except for queries with:
histograms
time groups with WEEK granularity
multiple groups when group fields belong to different nested contexts.
An Elasticsearch 7 configuration property elasticsearch.query.composite-agg.max-fetch-size
in the Elasticsearch 7 configuration file (edc-elasticsearch-7.0.properties
) can be used to specify the maximum number of buckets to return for each query within a composite aggregation. Valid values must be greater than zero; the default value is 10000. This property corresponds to the Elasticsearch setting search.max_buckets
, that also has a default value of 10000. If you elect to increase the value of the elasticsearch.query.composite-agg.max-fetch-size property
, be sure to correspondingly increase the value of the Elasticsearch search.max_buckets
setting.
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