FileSystem exists check using Azure File Data Lake client library for Java

Question

We have getFileSystemClient API - https://learn.microsoft.com/en-us/java/api/overview/azure/storage-file-datalake-readme?view=azure-java-stable#create-a-datalakefilesystemclient

and create file system API - https://learn.microsoft.com/en-us/java/api/overview/azure/storage-file-datalake-readme?view=azure-java-stable#create-a-file-system

Before saving data into Azure Data Lake File System, how do I check if file-system already exist or not? If file-system does not exist, invoke "create file system API" else getFileSystemClient API.

Answer 1

Hi @Shibu KV ,

Apologies for the delay in response. Unfortunately DataLakeFileSystemClient does not have an exists method. But even if it did, all it would do is call getProperties API and check for a 4xx error. As a workaround we would recommend you add this as a an exist method in your code, to validate if a file system exist or not.

I have also discussed this requirement with relevant product team and they are evaluating if they could add it to the SDK in the future.

Hope this info helps. Do let us know if you have further query.

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