Program: 170341
Project: 170341
Buggy source:
@Override public void execute(Tuple tuple){
  LOG.debug("String_Node_Str",tuple);
  try {
    if (Streams.DEFAULT_STREAM_ID.equals(tuple.getSourceStreamId())) {
      final MetricDefinitionAndTenantId metricDefinitionAndTenantId=(MetricDefinitionAndTenantId)tuple.getValue(0);
      final Metric metric=(Metric)tuple.getValue(1);
      checkLag(metric);
      LOG.debug("String_Node_Str",metricDefinitionAndTenantId);
      final List<MetricDefinitionAndTenantId> matches=matcher.match(metricDefinitionAndTenantId);
      for (      final MetricDefinitionAndTenantId match : matches)       collector.emit(tuple,new Values(match,metric));
    }
 else {
      String eventType=tuple.getString(0);
      MetricDefinitionAndTenantId metricDefinitionAndTenantId=(MetricDefinitionAndTenantId)tuple.getValue(1);
      LOG.debug("String_Node_Str",eventType,metricDefinitionAndTenantId);
      if (EventProcessingBolt.METRIC_ALARM_EVENT_STREAM_ID.equals(tuple.getSourceStreamId())) {
        if (EventProcessingBolt.DELETED.equals(eventType))         removeSubAlarm(metricDefinitionAndTenantId,tuple.getString(2));
      }
 else       if (EventProcessingBolt.METRIC_SUB_ALARM_EVENT_STREAM_ID.equals(tuple.getSourceStreamId())) {
        if (EventProcessingBolt.CREATED.equals(eventType)) synchronized (SENTINAL) {
          final SubAlarm subAlarm=(SubAlarm)tuple.getValue(2);
          addMetricDef(metricDefinitionAndTenantId,subAlarm.getId());
        }
      }
    }
  }
 catch (  Exception e) {
    LOG.error("String_Node_Str",tuple,e);
  }
 finally {
    collector.ack(tuple);
  }
}

Fixed version (ground truth):
@Override public void execute(Tuple tuple){
  LOG.debug("String_Node_Str",tuple);
  try {
    if (Streams.DEFAULT_STREAM_ID.equals(tuple.getSourceStreamId())) {
      final MetricDefinitionAndTenantId metricDefinitionAndTenantId=(MetricDefinitionAndTenantId)tuple.getValue(0);
      final Metric metric=(Metric)tuple.getValue(1);
      checkLag(metric);
      LOG.debug("String_Node_Str",metricDefinitionAndTenantId);
      final List<MetricDefinitionAndTenantId> matches=matcher.match(metricDefinitionAndTenantId);
      for (      final MetricDefinitionAndTenantId match : matches)       collector.emit(new Values(match,metric));
    }
 else {
      String eventType=tuple.getString(0);
      MetricDefinitionAndTenantId metricDefinitionAndTenantId=(MetricDefinitionAndTenantId)tuple.getValue(1);
      LOG.debug("String_Node_Str",eventType,metricDefinitionAndTenantId);
      if (EventProcessingBolt.METRIC_ALARM_EVENT_STREAM_ID.equals(tuple.getSourceStreamId())) {
        if (EventProcessingBolt.DELETED.equals(eventType))         removeSubAlarm(metricDefinitionAndTenantId,tuple.getString(2));
      }
 else       if (EventProcessingBolt.METRIC_SUB_ALARM_EVENT_STREAM_ID.equals(tuple.getSourceStreamId())) {
        if (EventProcessingBolt.CREATED.equals(eventType)) synchronized (SENTINAL) {
          final SubAlarm subAlarm=(SubAlarm)tuple.getValue(2);
          addMetricDef(metricDefinitionAndTenantId,subAlarm.getId());
        }
      }
    }
  }
 catch (  Exception e) {
    LOG.error("String_Node_Str",tuple,e);
  }
 finally {
    collector.ack(tuple);
  }
}