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Rest API available for Azure DataLake Gen2. the documentation is here. Does anyone have examples for the postman or anything like that?

TSambrook
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Toàn Thành Nguyễn
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1 Answers1

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Append is in two stages using this Path - Update API.

You first need to call the action=append to push it to the uncommitted buffer on the server e.g.

https://$STORAGE_ACCOUNT_NAME.dfs.core.windows.net/mydata/data/file1?action=append&position=0

Remember to pass the mandatory Authorisation, x-ms-version, x-ms-date and Content-Length Headers and the data that you want to append into the body of the request.

Once you have received the 202 Accepted you can then call the action=flush and pass the position that you want the data to be flushed to e.g.

https://$STORAGE_ACCOUNT_NAME.dfs.core.windows.net/mydata/data/file1?action=flush&position=13

Hope this helps.

TSambrook
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  • Thank you ! Do you know how to use the position parameter properly ? Microsoft's description one really confusing. – Toàn Thành Nguyễn Mar 13 '19 at 02:18
  • Not an expert on it but the way I got it to work on a new file was to set the flush position to be the length of bytes of the Content-Length from the append call. If you dig up any more information I would be interested to hear it. – TSambrook Mar 13 '19 at 08:54
  • Remember you can also use SAS instead of authorization headers - much less mess (at least for testing purposes). – psfinaki Mar 29 '19 at 10:56