From: Congxian Qiu <[hidden email]> Sent: Tuesday, July 23, 2019 9:48 To: 陈Darling <[hidden email]> Cc: user <[hidden email]> Subject: Re: FsStateBackend，hdfs rpc api too much，FileCreated and FileDeleted is for what？
These API calls are for checkpoint file created/deleted, and there is an ongoing issue which want to reduce the number.
In my understanding，CreateFileandFileCreatedapi is different，FileCreated is more like a check api, but I don’t find where it was called in the src source. I don’t understand when FileCreated Api was called and for what。
Is FileCreated api a hdfs internal confirmation api?
FLINK-11696 is to reduce CreateFile api by reducing mkdir. WillFileCreatedApi be reduced?