Page Comparison

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• The original ExecuteProcess (point to a script location)
• ExecuteStreamCommand; sends flowfile content to the standard input stream of the process and transfers standard output back into flowfile content. So your code should read from stdin and write to stdout
  
  • https://community.hortonworks.com/questions/178561/can-anyone-provide-an-example-of-a-python-script-e.html
  • https://pierrevillard.com/2016/03/09/transform-data-with-apache-nifi/comment-page-1/
  • https://stackoverflow.com/questions/49467969/python-script-using-executestreamcommand
• ExecuteSparkInteractive (spark code is set in the processor)
• Some newer "experimental" options
  • InvokeScriptedProcessor; you can use Javascript, Groovy, Jython, Lua, or JRuby to create a Processor implementation (code can be in the processor or point to a file)
    
    • http://funnifi.blogspot.com/2016/02/invokescriptedprocessor-hello-world.html
    • http://funnifi.blogspot.com/2017/06/invokescriptedprocessor-template-faster.html
  • ExecuteScript; Clojure, ECMAScript, Groovy, lua, python, ruby (code can be in the processor or point to a file)
  • ExecuteGroovyScript (code in the processor)

"Repositories" Details and Configuration

• https://nifi.apache.org/docs/nifi-docs/html/nifi-in-depth.html
• https://nifi.apache.org/docs/nifi-docs/html/administration-guide.html#flowfile-repository
• https://community.cloudera.com/t5/Community-Articles/Understanding-how-NiFi-s-Content-Repository-Archiving-works/ta-p/249418

HDF/NIFI Best practices for setting up a high performance NiFi installation >> https://community.hortonworks.com/articles/7882/hdfnifi-best-practices-for-setting-up-a-high-perfo.html

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