# Check if file is locked
##  Check if file is locked
### Description
The Check If A File Is Locked transform tries to determine if a file is locked by another process by trying to move the file to itself.
| Hop Engine | ✓ |
| ---------- | ------------ |
| Spark | ? |
| Flink | ? |
| Dataflow | ? |
### Options
* transform name: the transform name, unique in a pipeline
* Filename field: the name of the input field that will contain the names of the files during execution.
* Result fieldname: the name of the Boolean output field that will contain true or false depending on whether or not the file is locked or not.
* Add filename to result: check this if you want to add the checked file-names to the list of files in the pipelines result.
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