File Systems

This section contains a collection of short guides to show you how to import from a Pinot supported file system.

FileSystem is an abstraction provided by Pinot to access data in distributed file systems (DFS).

Pinot uses distributed file systems for the following purposes:

  • Batch Ingestion Job - To read the input data (CSV, Avro, Thrift, etc.) and to write generated segments to DFS

  • Controller - When a segment is uploaded to the controller, the controller saves it in the DFS configured.

  • Server - When a server(s) is notified of a new segment, the server copies the segment from remote DFS to their local node using the DFS abstraction.

Supported File Systems

Pinot lets you choose a distributed file system provider. The following file systems are supported by Pinot:

Enabling a File System

To use a distributed file system, you need to enable plugins. To do that, specify the plugin directory and include the required plugins -

-Dplugins.dir=/opt/pinot/plugins -Dplugins.include=pinot-plugin-to-include-1,pinot-plugin-to-include-2

Now, You can proceed to change the filesystem in the controller and server config as shown below:

#CONTROLLER[scheme]=className of the pinot file systems
#SERVER[scheme]=className of the pinotfile systems

scheme refers to the prefix used in the URI of the filesystem. e.g. for the URI s3://bucket/path/to/file , the scheme is s3

You can also change the filesystem during ingestion. In the ingestion job spec, specify the filesystem with the following config:

  - scheme: file
    className: org.apache.pinot.spi.filesystem.LocalPinotFS

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