Hi yuvraj, Sorry, I didn't see it clearly. I think in many UDF contexts, such as MapFunction, ProcessFunction, etc., you can access the Rest API as a client. Also if you want to improve performance, maybe async I/O will help you[1].
[1]: https://ci.apache.org/projects/flink/flink-docs-release-1.5/dev/stream/operators/asyncio.html Thanks, vino. 2018-08-01 11:55 GMT+08:00 yuvraj singh <19yuvrajsing...@gmail.com>: > Hi vino , thanks for the information . > But I was looking for the use case where I need to call a web service on > the stream . > > Thanks > Yubraj Singh > > On Wed, Aug 1, 2018, 8:32 AM vino yang <yanghua1...@gmail.com> wrote: > >> Hi yuvraj, >> >> The documentation of Flink REST API is here : https://ci.apache.org/ >> projects/flink/flink-docs-release-1.5/monitoring/rest_ >> api.html#monitoring-rest-api >> >> Thanks, vino. >> >> 2018-08-01 3:29 GMT+08:00 yuvraj singh <19yuvrajsing...@gmail.com>: >> >>> Hi I have a use case where I need to call rest apis from a flink . I am >>> not getting much context form internet , please help me on this . >>> >>> Thanks >>> >>> >>