Parquet output plugin for Embulk

Overview

• Plugin type: output
• Load all or nothing: no
• Resume supported: no
• Cleanup supported: no

Configuration

• path_prefix: A prefix of output path. This is hadoop Path URI, and you can also include scheme and authority within this parameter. (string, required)
• file_ext: An extension of output path. (string, default: .parquet)
• sequence_format: (string, default: .%03d)
• block_size: A block size of parquet file. (int, default: 134217728(128M))
• page_size: A page size of parquet file. (int, default: 1048576(1M))
• compression_codec: A compression codec. available: UNCOMPRESSED, SNAPPY, GZIP (string, default: UNCOMPRESSED)
• default_timezone: Time zone of timestamp columns. This can be overwritten for each column using column_options
• default_timestamp_format: Format of timestamp columns. This can be overwritten for each column using column_options
• column_options: Specify timezone and timestamp format for each column. Format of this option is the same as the official csv formatter. See document.
• extra_configurations: Add extra entries to Configuration which will be passed to ParquetWriter
• overwrite: Overwrite if output files already exist. (default: fail if files exist)
• enablesigv4: Enable Signature Version 4 Signing Process for S3 eu-central-1(Frankfurt) region
• addUTF8: If true, string and timestamp columns are stored with OriginalType.UTF8 (boolean, default false)

Example

out:
  type: parquet
  path_prefix: file:///data/output

How to write parquet files into S3

out:
  type: parquet
  path_prefix: s3a://bucket/keys
  extra_configurations:
    fs.s3a.access.key: 'your_access_key'
    fs.s3a.secret.key: 'your_secret_access_key'

Build

$ ./gradlew gem