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parquet

For any Parquet file: view (cat) the file, its metadata (details), or its schema.

This command is available only on Linux.

Sub-commands:

Sub-commands and Options
​

parquet cat
​

Cat Parquet events to console.

Usage:

To view a Parquet file:

./cribl parquet cat -f /some_parquet_file

Sample response:

{"__bytes":274,"Unnamed: 0":0,"name":"apples","quantity":10,"price":2.6,"date":"2018-04-02 20:29:00","day":"2017-11-26","finger":"b'FNORD'","inter":"b'*\\x00\\x00\\x00\\x17\\x00\\x00\\x00\\t\\x03\\x00\\x00'","stock":"[{'quantity': array([10]), 'warehouse': 'A'}\n {'quantity': array([20]), 'warehouse': 'B'}]","colour":"['green' 'red']","meta_json":null}
...

Arguments:

OptionDefinition
-f <file>Path to Parquet file.
-m <max>Maximum events to print.

parquet details
​

View all Parquet details (schema and statistics) and metadata, including encoding and compression.

Usage:

./cribl parquet details -f /some_parquet_file

Sample response:

{
  "schema": {
    "Unnamed: 0": {
      "optional": true,
      "type": "INT64"
    },
    ...
  },
  "path": "../../../src/sluice/js/util/__tests__/data/parquet/single/small_fruits.parquet",
  "num_rows": 40000,
  "num_cols": 11,
  "num_real_cols": 11,
  "num_row_groups": 1,
  "created_by": "parquet-cpp-arrow version 11.0.0",
  "schema_root_name": "schema",
  "metadata": {
    "pandas": "{\"index_columns\": [{\"kind\": \"range\", \"name\": null, \"start\": 0, \"stop\": 40000, \"step\": 1}],
    ...
  },
  "version": "PARQUET_2_6",
  "metadataSize": 6072,
  ...
    }
  ]
}

Arguments:

OptionDefinition
-f <file>Path to Parquet file.

parquet schema
​

View a Parquet file’s schema (not including encoding or compression), expressed as JSON like in the Parquet Schema editor.

Usage:

./cribl parquet schema -f /some_parquet_file

Sample response:

{
  "Unnamed: 0": {
    "optional": true,
    "type": "INT64"
  },
  "name": {
    "optional": true,
    "type": "STRING"
  },
  "quantity": {
    "optional": true,
    "type": "DOUBLE"
  },
  "price": {
    "optional": true,
    "type": "DOUBLE"
...
  }
}

Arguments:

OptionDefinition
-f <file>Path to Parquet file.