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https://issues.apache.org/jira/browse/NIFI-4946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16391546#comment-16391546
 ] 

ASF GitHub Bot commented on NIFI-4946:
--------------------------------------

Github user zenfenan commented on a diff in the pull request:

    https://github.com/apache/nifi/pull/2521#discussion_r173216966
  
    --- Diff: 
nifi-nar-bundles/nifi-spark-bundle/nifi-livy-processors/src/main/java/org/apache/nifi/processors/livy/ExecuteSparkInteractive.java
 ---
    @@ -178,48 +247,188 @@ public void onTrigger(ProcessContext context, final 
ProcessSession session) thro
     
             String sessionId = livyController.get("sessionId");
             String livyUrl = livyController.get("livyUrl");
    -        String code = 
context.getProperty(CODE).evaluateAttributeExpressions(flowFile).getValue();
    -        if (StringUtils.isEmpty(code)) {
    -            try (InputStream inputStream = session.read(flowFile)) {
    -                // If no code was provided, assume it is in the content of 
the incoming flow file
    -                code = IOUtils.toString(inputStream, charset);
    -            } catch (IOException ioe) {
    -                log.error("Error reading input flowfile, penalizing and 
routing to failure", new Object[]{flowFile, ioe.getMessage()}, ioe);
    -                flowFile = session.penalize(flowFile);
    -                session.transfer(flowFile, REL_FAILURE);
    -                return;
    -            }
    -        }
     
    -        code = StringEscapeUtils.escapeJavaScript(code);
    -        String payload = "{\"code\":\"" + code + "\"}";
    +
             try {
    -            final JSONObject result = submitAndHandleJob(livyUrl, 
livySessionService, sessionId, payload, statusCheckInterval);
    -            log.debug("ExecuteSparkInteractive Result of Job Submit: " + 
result);
    -            if (result == null) {
    -                session.transfer(flowFile, REL_FAILURE);
    -            } else {
    +
    +            if (isBatchJob) {
    +
    +                String jsonResponse = null;
    +
    +                if (StringUtils.isEmpty(jsonResponse)) {
    --- End diff --
    
    This will be true all the time, right?


> nifi-spark-bundle : Adding support for pyfiles, file, jars options
> ------------------------------------------------------------------
>
>                 Key: NIFI-4946
>                 URL: https://issues.apache.org/jira/browse/NIFI-4946
>             Project: Apache NiFi
>          Issue Type: New Feature
>          Components: Extensions
>    Affects Versions: 1.6.0
>         Environment: Ubuntu 16.04, IntelliJ
>            Reporter: Mageswaran
>            Priority: Major
>             Fix For: 1.6.0
>
>         Attachments: nifi-spark-options.png, nifi-spark.png
>
>
> Adding support for submitting PySpark based Sparks jobs (which is normally 
> structured as modules) over Livy on existing "ExecuteSparkInteractive" 
> processor.
> This is done by reading file paths for pyfiles and file and an option from 
> user whether the processor should trigger a batch job or not.
> [https://livy.incubator.apache.org/docs/latest/rest-api.html]
>  *Current Work flow Logic ( [https://github.com/apache/nifi/pull/2521 
> )|https://github.com/apache/nifi/pull/2521]*
>  * Check whether the processor has to handle code or submit a Spark job
>  * Read incoming flow file
>  ** If batch == true
>  *** If flow file matches Livy `batches` JSON response through `wait` loop
>  **** Wait for Status Check Interval
>  **** Read the state
>  **** If state is `running` route it to `wait` or if it  is `success` or 
> `dead` route it accordingly
>  *** Else
>  **** Ignore the flow file
>  **** Trigger the Spark job over Livy `batches` endpoint
>  **** Read the state of the submitted job
>  **** If state is `running` route it to `wait` or if it  is `success` or 
> `dead` route it accordingly
>  ** Else:
>  *** Existing Logic to handle `Code`
>  
> !nifi-spark-options.png!
> !nifi-spark.png!
>  
> Thanks.



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