Task "contributor_type_specific_code_type" not reporting internal errors correctly?

[lukas-vlcek]

There seems to be possible issue with contributor_type_specific_code_type reindexing task in terms of handling internal errors. Sometimes the task finished without any errors but no records are created. The symptoms are as follows:

1. Run reindexing task:

curl -X POST 'https://\<searchisko2.x\>/v2/rest/tasks/task/sync_contributors_and_profiles' \
--user superadmin_name:superadmin_pswd -H "Content-Type:application/json" \
-d '{"contributor_type_specific_code_type" : "jbossorg_username","size":100, "start":50}'

2. The task is started and taskId is returned. It is possible to check task status:

curl -X GET --user superadmin_name:superadmin_pswd \
'https://\<searchisko2.x\>/v2/rest/tasks/task/i3kieH5jQG-iHg2YE0rfaQ'

# Response:
{  
   "id":"i3kieH5jQG-iHg2YE0rfaQ",
   "taskType":"sync_contributors_and_profiles",
   "taskConfigSerialized":"{\"contributor_type_specific_code_type\":\"jbossorg_username\",\"size\":100,\"start\":700}",
   "taskCreatedAt":"2015-05-04T08:46:33.000+0000",
   "lastRunStartedAt":"2015-05-04T08:46:33.000+0000",
   "runCount":1,
   "lastRunFinishedAt":"2015-05-04T08:47:04.085+0000",
   "executionNodeId":"<searchisko2.x>",
   "taskStatus":"FINISHED_OK",
   "processingLog":"Task started. Count of processed profiles: \n\n\nTask Finished. Total count of processed profiles: 0",
   "cancelRequested":false,
   "heartbeat":1430729215630
}

Can this be related to network issues when Searchisko calls JIVE (code: 502)?