Kamal questions

Kamal answers

• ElasticSearch - difference between two date fields
• How to aggregate on a matched prefix/phrase from ElasticSearch records?
• Multiple Analyzers to a specific field
• Elasticsearch aggregation with hierarchical category, subcategory; limit the levels
• How to use ingest pipelines on already indexed documents?
• Is it possible to sort by a range in Elasticsearch?
• Elasticsearch - Count duplicated and unique values
• How does MapReduce recover from errors if failure happens in an intermediate stage
• Is synchronized locking a Reentrantlock, or only its object?
• Elasticsearch: Can it be used to avoid writing your own NLP? (e.g. Re-invent the wheel)