aws emr create-cluster --ami-version3.2.0
--no-auto-terminate --log-uri s3://mybucket/logs/
--enable-debugging \ --instance-groups InstanceGroupType=MASTER
,InstanceType=m1.large
,InstanceCount=1
\ InstanceGroupType=CORE
,InstanceType=m1.large
,InstanceCount=2
We'll explore scenarios involving nested queries, aggregations, custom scoring, and hybrid queries that combine multiple search criteria. 1. Nested Queries ElasticSearch Example: ElasticSearch supports nested documents, which allows for querying on nested fields with complex conditions. Query: Find products where the product has a review with a rating of 5 and the review text contains "excellent". { "query": { "nested": { "path": "reviews", "query": { "bool": { "must": [ { "match": { "reviews.rating": 5 } }, { "match": { "reviews.text": "excellent" } } ] } } } } } Redis Limitation: Redis does not support nested documents natively. While you can store nested structures in JSON documents using the RedisJSON module, querying these nested structures with complex condi...
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