remove useless config, and make sure file writer is flush.

skywalking-storage-center/skywalking-storage/src/main/java/com/a/eye/skywalking/storage/config/Config.java

@@ -13,16 +13,6 @@ public class Config {
     }
 
 
-    public static class DataConsumer {
-
-        public static int CHANNEL_SIZE = 10;
-
-        public static int BUFFER_SIZE = 1000;
-
-        public static int CONSUMER_SIZE = 5;
-    }
-
-
     public static class DataFile {
         public static String PATH = "/data/file";
 

skywalking-storage-center/skywalking-storage/src/main/java/com/a/eye/skywalking/storage/data/file/DataFileWriter.java

@@ -20,11 +20,13 @@ public class DataFileWriter {
         }
 
         IndexMetaCollection collections = new IndexMetaCollection();
+        try {
             for (SpanData data : spanData) {
                 collections.add(dataFile.write(data));
             }
-
+        }finally {
             dataFile.flush();
+        }
 
         return collections;
     }