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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.
Pinot lets you choose a distributed file system provider. The following file systems are supported by Pinot:
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
pinot.controller.storage.factory.class.[scheme]=className of the pinot file systems
pinot.controller.segment.fetcher.protocols=file,http,[scheme]
pinot.controller.segment.fetcher.[scheme].class=org.apache.pinot.common.utils.fetcher.PinotFSSegmentFetcher
#SERVER
pinot.server.storage.factory.class.[scheme]=className of the pinotfile systems
pinot.server.segment.fetcher.protocols=file,http,[scheme]
pinot.server.segment.fetcher.[scheme].class=org.apache.pinot.common.utils.fetcher.PinotFSSegmentFetcher
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:
pinotFSSpecs
- scheme: file
className: org.apache.pinot.spi.filesystem.LocalPinotFS