question Re: Using Apache Nifi How can you perform a mathematical operation on json attribute in Support Questions

question Re: Using Apache Nifi How can you perform a mathematical operation on json attribute in Support Questions https://community.cloudera.com/t5/Support-Questions/Using-Apache-Nifi-How-can-you-perform-a-mathematical/m-p/285166#M211643 <a href="https://community.cloudera.com/t5/user/viewprofilepage/user-id/45715">@fowler7878</a>  my initial thought here for you would be to chain the following three NiFi processor components together: --> EvaluateJsonPath ---> UpdateAttribute ---> UpdateRecord --> 1. The EvaluateJsonPath processor should be configured to write the desired Json field value out to a NiFi FlowFileAttribute. 2. The UpdateAttribute processor would be used to manipulate that extracted value by subtracting 30 from it using the NiFi Expression Language (EL) 3. The UpdateRecord processor would be used to update your original FlowFile JSON content with the new Json field value. Hope this helps you,Matt Mon, 09 Dec 2019 20:42:26 GMT MattWho 2019-12-09T20:42:26Z