druid-docs-cn/development/extensions-core/parquet.md

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parquet Apache Parquet Extension

This Apache Druid module extends Druid Hadoop based indexing to ingest data directly from offline Apache Parquet files.

Note: If using the parquet-avro parser for Apache Hadoop based indexing, druid-parquet-extensions depends on the druid-avro-extensions module, so be sure to include both.

The druid-parquet-extensions provides the Parquet input format, the Parquet Hadoop parser, and the Parquet Avro Hadoop Parser with druid-avro-extensions. The Parquet input format is available for native batch ingestion and the other 2 parsers are for Hadoop batch ingestion. Please see corresponding docs for details.