Program: 6137
Project: 6137
Buggy source:
@Override public void initialize(final WorkerContext context) throws Exception {
  if (Boolean.valueOf(context.getSpecification().getProperty(Constants.STAGE_LOGGING_ENABLED))) {
    LogStageInjector.start();
  }
  super.initialize(context);
  Map<String,String> properties=context.getSpecification().getProperties();
  appName=context.getApplicationSpecification().getName();
  Preconditions.checkArgument(properties.containsKey(Constants.PIPELINEID));
  Preconditions.checkArgument(properties.containsKey(UNIQUE_ID));
  String uniqueId=properties.get(UNIQUE_ID);
  final String appName=context.getApplicationSpecification().getName();
  stateStoreKey=String.format("String_Node_Str",appName,SEPARATOR,uniqueId,SEPARATOR,context.getInstanceId());
  stateStoreKeyBytes=Bytes.toBytes(stateStoreKey);
  getContext().execute(new TxRunnable(){
    @Override public void run(    DatasetContext dsContext) throws Exception {
      KeyValueTable stateTable=dsContext.getDataset(ETLRealtimeApplication.STATE_TABLE);
      byte[] startKey=Bytes.toBytes(String.format("String_Node_Str",appName,SEPARATOR));
      CloseableIterator<KeyValue<byte[],byte[]>> rows=stateTable.scan(startKey,Bytes.stopKeyForPrefix(startKey));
      try {
        while (rows.hasNext()) {
          KeyValue<byte[],byte[]> row=rows.next();
          if (Bytes.compareTo(stateStoreKeyBytes,row.getKey()) != 0) {
            stateTable.delete(row.getKey());
          }
        }
      }
  finally {
        rows.close();
      }
    }
  }
);
  PipelinePhase pipeline=GSON.fromJson(properties.get(Constants.PIPELINEID),PipelinePhase.class);
  Map<String,TransformDetail> transformationMap=new HashMap<>();
  initializeSource(context,pipeline);
  initializeTransforms(context,transformationMap,pipeline);
  initializeSinks(context,transformationMap,pipeline);
  Set<String> startStages=new HashSet<>();
  startStages.addAll(pipeline.getStageOutputs(sourceStageName));
  transformExecutor=new TransformExecutor(transformationMap,startStages);
}

Fixed version (ground truth):
@Override public void initialize(final WorkerContext context) throws Exception {
  if (Boolean.valueOf(context.getSpecification().getProperty(Constants.STAGE_LOGGING_ENABLED))) {
    LogStageInjector.start();
  }
  super.initialize(context);
  Map<String,String> properties=context.getSpecification().getProperties();
  appName=context.getApplicationSpecification().getName();
  Preconditions.checkArgument(properties.containsKey(Constants.PIPELINEID));
  Preconditions.checkArgument(properties.containsKey(UNIQUE_ID));
  String uniqueId=properties.get(UNIQUE_ID);
  final String appName=context.getApplicationSpecification().getName();
  stateStoreKey=String.format("String_Node_Str",appName,SEPARATOR,uniqueId,SEPARATOR,context.getInstanceId());
  stateStoreKeyBytes=Bytes.toBytes(stateStoreKey);
  getContext().execute(new TxRunnable(){
    @Override public void run(    DatasetContext dsContext) throws Exception {
      KeyValueTable stateTable=dsContext.getDataset(ETLRealtimeApplication.STATE_TABLE);
      byte[] startKey=Bytes.toBytes(String.format("String_Node_Str",appName,SEPARATOR));
      try (CloseableIterator<KeyValue<byte[],byte[]>> rows=stateTable.scan(startKey,Bytes.stopKeyForPrefix(startKey))){
        while (rows.hasNext()) {
          KeyValue<byte[],byte[]> row=rows.next();
          if (Bytes.compareTo(stateStoreKeyBytes,row.getKey()) != 0) {
            stateTable.delete(row.getKey());
          }
        }
      }
     }
  }
);
  PipelinePhase pipeline=GSON.fromJson(properties.get(Constants.PIPELINEID),PipelinePhase.class);
  Map<String,TransformDetail> transformationMap=new HashMap<>();
  initializeSource(context,pipeline);
  initializeTransforms(context,transformationMap,pipeline);
  initializeSinks(context,transformationMap,pipeline);
  Set<String> startStages=new HashSet<>();
  startStages.addAll(pipeline.getStageOutputs(sourceStageName));
  transformExecutor=new TransformExecutor(transformationMap,startStages);
}