Checking the existence of a file in HDFS
This scenario applies only to Talend products with Big Data.
For more technologies supported by Talend, see Talend components.
In this scenario, the two-component Job checks whether a specific file exists in HDFS and returns a message to indicate the result of the verification.
In the real-world practice, you can take further action to process the file checked according to the verification result, using the other HDFS components provided with the Studio.
![](/en-US/components/8.0/Subsystems/hdfs/Content/Resources/images/use_case-thdfsexist1.png)
Launch the Hadoop distribution in which you want to check the existence of a particular file. Then, proceed as follows:
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