August 2019
Intermediate to advanced
560 pages
13h 41m
English
Content preview from Advanced Elasticsearch 7.0
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diversified_sampler
Similar to using the sampler aggregation to limit the sub-aggregation results, this restricts the number of the samples to have a common value on the specified field. It reduces the bias distribution of the sample pool:
- Example: Here we are using diversified_sampler on the family field and setting the max_docs_per_value=10 parameter (sampling 10 documents per bucket) with the same significant_terms aggregation as the sampler example for the cf_etf index:
"aggs": { "sampling": { "diversified_sampler": {"field":"family", "shard_size":150, "max_docs_per_value" : 10}, "aggs": {"significant_terms_category": {"significant_terms": {"field": "category"}}}}}
According to the result of sampler, there are 61 documents with International ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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