Program: 47742
Project: 47742
Buggy source:
/** 
 * Validates the current configuration of the step. <p/> <strong>To be valid in Quick Setup mode:</strong> <ul> <li>Name is required</li> <li>Oozie URL is required and must be a valid oozie location</li> <li>Workflow Properties file path is required and must be a valid job properties file</li> </ul>
 * @param config Configuration to validate
 * @return
 */
@Override public List<String> getValidationWarnings(OozieJobExecutorConfig config){
  List<String> messages=new ArrayList<String>();
  if (StringUtil.isEmpty(config.getJobEntryName())) {
    messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
  }
  if (StringUtil.isEmpty(config.getOozieUrl())) {
    messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
  }
 else {
    try {
      oozieClient=getOozieClient(config);
      oozieClient.getProtocolUrl();
      oozieClient.validateWSVersion();
    }
 catch (    OozieClientException e) {
      if (e.getErrorCode().equals(HTTP_ERROR_CODE_404) || (e.getCause() != null && (e.getCause() instanceof MalformedURLException || e.getCause() instanceof ConnectException))) {
        messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
      }
 else {
        messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str",oozieClient.getClientBuildVersion()));
      }
    }
  }
  if (StringUtil.isEmpty(config.getOozieWorkflowConfig())) {
    messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
  }
 else {
    try {
      Properties props=getProperties(config);
      if (props.containsKey(OozieClient.APP_PATH) || props.containsKey(OozieClient.COORDINATOR_APP_PATH) || props.containsKey(OozieClient.BUNDLE_APP_PATH)) {
      }
 else {
        messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
      }
    }
 catch (    KettleFileException e) {
      messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
    }
catch (    IOException e) {
      messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
    }
  }
  return messages;
}

Fixed version (ground truth):
/** 
 * Validates the current configuration of the step. <p/> <strong>To be valid in Quick Setup mode:</strong> <ul> <li>Name is required</li> <li>Oozie URL is required and must be a valid oozie location</li> <li>Workflow Properties file path is required and must be a valid job properties file</li> </ul>
 * @param config Configuration to validate
 * @return
 */
@Override public List<String> getValidationWarnings(OozieJobExecutorConfig config){
  List<String> messages=new ArrayList<String>();
  if (StringUtil.isEmpty(config.getJobEntryName())) {
    messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
  }
  if (StringUtil.isEmpty(config.getOozieUrl())) {
    messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
  }
 else {
    try {
      oozieClient=getOozieClient(config);
      oozieClient.getProtocolUrl();
      oozieClient.validateWSVersion();
    }
 catch (    OozieClientException e) {
      if (e.getErrorCode().equals(HTTP_ERROR_CODE_404) || (e.getCause() != null && (e.getCause() instanceof MalformedURLException || e.getCause() instanceof ConnectException))) {
        messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
      }
 else {
        messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str",oozieClient.getClientBuildVersion()));
      }
    }
  }
  if (config.getModeAsEnum() == JobEntryMode.QUICK_SETUP && StringUtil.isEmpty(config.getOozieWorkflowConfig())) {
    messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
  }
 else {
    try {
      Properties props=getProperties(config);
      if (props.containsKey(OozieClient.APP_PATH) || props.containsKey(OozieClient.COORDINATOR_APP_PATH) || props.containsKey(OozieClient.BUNDLE_APP_PATH)) {
      }
 else {
        messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
      }
    }
 catch (    KettleFileException e) {
      messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
    }
catch (    IOException e) {
      messages.add(BaseMessages.getString(OozieJobExecutorJobEntry.class,"String_Node_Str"));
    }
  }
  return messages;
}