ed de created METRON-582:
----------------------------

             Summary: Leading zeros in parsed strings dropped 
                 Key: METRON-582
                 URL: https://issues.apache.org/jira/browse/METRON-582
             Project: Metron
          Issue Type: Bug
    Affects Versions: 0.2.1BETA
         Environment: 16 core 2.4
10G HDD
58G RAM
Azure VM
            Reporter: ed de
            Priority: Minor


Given a username as string of "0002", the username submitted to the parser for 
any STELLAR transformations is "2", and should be "0002". therefore, any 
further transforms do not occur.

Sample parser:
{
  "parserClassName": "org.apache.metron.parsers.GrokParser",
  "sensorTopic": "metron_jira_topic",
  "parserConfig": {
    "grokPath": "/patterns/metron_jira_path",
    "patternLabel": "M_DELIMITED",
    "timestampField": "timestamp"
  },
"fieldTransformations" : [
{
"transformation" : "STELLAR"
,"output" : [ "username" ]
,"config" :
{ "username" : "TO_STRING(username)" }
}
]
}




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