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docs.org.apache.nifi.processors.mongodb.gridfs.FetchGridFS.additionalDetails.md Maven / Gradle / Ivy

# FetchGridFS

## Description:

This processor retrieves one or more files from GridFS. The query can be provided in one of three ways:

* Query configuration parameter.
* Built for you by configuring the filename parameter. (Note: this is just a filename, Mongo queries cannot be embedded
  in the field).
* Retrieving the query from the flowfile contents.

The processor can also be configured to either commit only once at the end of a fetch operation or after each file that
is retrieved. Multiple commits is generally only necessary when retrieving a lot of data from GridFS as measured in
total data size, not file count, to ensure that the disks NiFi is using are not overloaded.