switch reingest task to noop & fix compilation

switch back to noop task, its confusing to have a reinvest task that
does nothing.
fix compilation

indexing-service/src/main/java/io/druid/indexing/common/task/Task.java

@@ -24,7 +24,6 @@ import com.fasterxml.jackson.annotation.JsonTypeInfo;
 import io.druid.indexing.common.TaskStatus;
 import io.druid.indexing.common.TaskToolbox;
 import io.druid.indexing.common.actions.TaskActionClient;
-import io.druid.indexing.firehose.ReIngestTask;
 import io.druid.query.Query;
 import io.druid.query.QueryRunner;
 
@@ -54,8 +53,7 @@ import io.druid.query.QueryRunner;
     @JsonSubTypes.Type(name = "index_realtime", value = RealtimeIndexTask.class),
     @JsonSubTypes.Type(name = "noop", value = NoopTask.class),
     @JsonSubTypes.Type(name = "version_converter", value = VersionConverterTask.class),
-    @JsonSubTypes.Type(name = "version_converter_sub", value = VersionConverterTask.SubTask.class),
+    @JsonSubTypes.Type(name = "version_converter_sub", value = VersionConverterTask.SubTask.class)
-    @JsonSubTypes.Type(name = "reingest", value = ReIngestTask.class)
 })
 public interface Task
 {

indexing-service/src/main/java/io/druid/indexing/firehose/IngestSegmentFirehoseFactory.java

@@ -45,6 +45,7 @@ import io.druid.granularity.QueryGranularity;
 import io.druid.indexing.common.TaskToolbox;
 import io.druid.indexing.common.TaskToolboxFactory;
 import io.druid.indexing.common.actions.SegmentListUsedAction;
+import io.druid.indexing.common.task.NoopTask;
 import io.druid.query.filter.DimFilter;
 import io.druid.query.select.EventHolder;
 import io.druid.segment.Cursor;
@@ -138,8 +139,9 @@ public class IngestSegmentFirehoseFactory implements FirehoseFactory<InputRowPar
   {
     log.info("Connecting firehose: dataSource[%s], interval[%s]", dataSource, interval);
     // better way to achieve this is to pass toolbox to Firehose, The instance is initialized Lazily on connect method.
+    // Noop Task is just used to create the toolbox and list segments.
     final TaskToolbox toolbox = injector.getInstance(TaskToolboxFactory.class).build(
-        new ReIngestTask("Ingest-Task-Id", dataSource)
+        new NoopTask("reingest", 0, 0, null, null)
     );
 
     try {

indexing-service/src/main/java/io/druid/indexing/firehose/ReIngestTask.java

@@ -1,55 +0,0 @@
-/*
- * Druid - a distributed column store.
- * Copyright (C) 2012, 2013, 2014  Metamarkets Group Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
- */
-
-package io.druid.indexing.firehose;
-
-import com.fasterxml.jackson.annotation.JsonProperty;
-import io.druid.indexing.common.TaskStatus;
-import io.druid.indexing.common.TaskToolbox;
-import io.druid.indexing.common.actions.TaskActionClient;
-import io.druid.indexing.common.task.AbstractTask;
-
-public class ReIngestTask extends AbstractTask
-{
-  public ReIngestTask(
-      @JsonProperty("id") final String id,
-      @JsonProperty("dataSource") final String dataSource
-  )
-  {
-    super(id, dataSource);
-  }
-
-  @Override
-  public String getType()
-  {
-    return "reingest";
-  }
-
-  @Override
-  public boolean isReady(TaskActionClient taskActionClient) throws Exception
-  {
-    return true;
-  }
-
-  @Override
-  public TaskStatus run(TaskToolbox toolbox) throws Exception
-  {
-    return TaskStatus.success(getId());
-  }
-}

server/src/test/java/io/druid/realtime/firehose/CombiningFirehoseFactoryTest.java

@@ -24,9 +24,11 @@ import com.metamx.common.parsers.ParseException;
 import io.druid.data.input.Firehose;
 import io.druid.data.input.FirehoseFactory;
 import io.druid.data.input.InputRow;
+import io.druid.data.input.Row;
 import io.druid.data.input.impl.InputRowParser;
 import io.druid.segment.realtime.firehose.CombiningFirehoseFactory;
 import io.druid.utils.Runnables;
+import org.joda.time.DateTime;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -75,6 +77,12 @@ public class CombiningFirehoseFactoryTest
         return timestamp;
       }
 
+      @Override
+      public DateTime getTimestamp()
+      {
+        return null;
+      }
+
       @Override
       public List<String> getDimension(String dimension)
       {
@@ -93,6 +101,11 @@ public class CombiningFirehoseFactoryTest
         return null;
       }
 
+      @Override
+      public int compareTo(Row o)
+      {
+        return 0;
+      }
     };
   }