elasticsearch Archives

elasticsearch, Programming

IT Nursery

ElasticSearch: Unassigned Shards, how to fix?

I have an ES cluster with 4 nodes: number_of_replicas: 1 search01 - master: false, data: false search02 - master: true, data: true search03 ...

June 3, 2022
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elasticsearch, Programming

IT Nursery

Delete all documents from index/type without deleting type

I know one can delete all documents from a certain type via deleteByQuery. Example: curl -XDELETE 'http://localhost:9200/twitter/tweet/_query' -d '{ "query" : { "term" ...

June 2, 2022
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elasticsearch, Programming

IT Nursery

Show all Elasticsearch aggregation results/buckets and not just 10

I’m trying to list all buckets on an aggregation, but it seems to be showing only the first 10. My search: curl -XPOST ...

May 28, 2022
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Queries vs. Filters

I can’t see any description of when I should use a query or a filter or some combination of the two. What is ...

May 25, 2022
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Elasticsearch difference between MUST and SHOULD bool query

What is the difference between MUST and SHOULD bool query in ES? If I ONLY want results that contain my terms should I ...

May 23, 2022
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elasticsearch bool query combine must with OR

I am currently trying to migrate a solr-based application to elasticsearch. I have this lucene query (( name:(+foo +bar) OR info:(+foo +bar) )) ...

May 21, 2022
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Elasticsearch error: cluster_block_exception [FORBIDDEN/12/index read-only / allow delete (api)], flood stage disk watermark exceeded

When trying to post documents to Elasticsearch as normal I’m getting this error: cluster_block_exception [FORBIDDEN/12/index read-only / allow delete (api)]; I also see ...

May 19, 2022
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Shards and replicas in Elasticsearch

I am trying to understand what shard and replica is in Elasticsearch, but I didn’t manage to understand it. If I download Elasticsearch ...

May 7, 2022
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Removing Data From ElasticSearch

I’m new to ElasticSearch. I’m trying to figure out how to remove data from ElasticSearch. I have deleted my indexes. However, that doesn’t ...

May 5, 2022
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Make elasticsearch only return certain fields?

I’m using elasticsearch to index my documents. Is it possible to instruct it to only return particular fields instead of the entire json ...

May 2, 2022
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