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elasticsearch-dump is a command-line tool for importing and exporting data, mappings, and settings between Elasticsearch and OpenSearch clusters. It serves as a backup and restore system, a data transfer utility for cross-cluster migrations, and a bridge for streaming search index data to and from S3-compatible storage. The tool functions as a JSON index data transformer, allowing the use of custom JavaScript modules to modify or anonymize documents in flight during the migration process. It also enables the creation of search bodies using external JavaScript templates to customize the data b

elasticsearch-dump is a command line tool for importing, exporting, and transferring data between Elasticsearch and OpenSearch instances. It functions as an index dump utility that saves documents, mappings, and analyzers to local files or standard output. The tool enables the movement of data between clusters using local files as an intermediary and can flatten nested JSON documents into CSV files for external analysis. It allows for the modification or anonymization of documents during the transfer process through the use of custom JavaScript functions. The utility covers data extraction a