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| <head> |
| <meta charset="utf-8" /> |
| <title>UpdateByQueryElasticsearch</title> |
| <link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css" /> |
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| <body> |
| <p>This processor executes an update operation against one or more indices using the _update_by_query handler. The |
| query should be a valid Elasticsearch JSON DSL query (Lucene syntax is not supported). An optional Elasticsearch |
| script can be specified to execute against the matched documents. An example query with script:</p> |
| <pre> |
| { |
| "script": { |
| "source": "ctx._source.count++", |
| "lang": "painless" |
| }, |
| "query": { |
| "match": { |
| "username.keyword": "john.smith" |
| } |
| } |
| } |
| </pre> |
| <p>To update all of the contents of an index, this could be used:</p> |
| <pre> |
| { |
| "query": { |
| "match_all": {} |
| } |
| } |
| </pre> |
| </body> |
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