be/src/common/logging.cc
void MessageListener(string* s, bool* changed) {
  if (!FLAGS_redaction_rules_file.empty()) {
    impala::Redact(s, changed);
  }
  PrependFragment(s, changed);
}
// Manipulates log messages by:
// - Applying redaction rules (if necessary)
// - Prepending fragment id (if available)
Manipulates log messages by:
Applying redaction rules (if necessary)
Prepending fragment id (if available)
Manipulates log messages by : Applying redaction rules ( if necessary ) Prepending fragment id ( if available )
void MessageListener(string* s, bool* changed) {
  if (!FLAGS_redaction_rules_file.empty()) {
    impala::Redact(s, changed);
  }
  PrependFragment(s, changed);
}
void MessageListener ( string * s , bool * changed ) { if ( ! FLAGS_redaction_rules_file . empty ( ) ) { impala :: Redact ( s , changed ) ; } PrependFragment ( s , changed ) ; }
Manipulates log messages by:
 Applying redaction rules (if necessary)
 Prepending fragment id (if available)
Manipulates log messages by : Applying redaction rules ( if necessary ) Prepending fragment id ( if available )