Initial impl of HoodieRealtimeInputFormat

- Works end-end for flat schemas
 - Schema evolution & hardening remains
 - HoodieClientExample can now write mor tables as well

hoodie-utilities/src/test/java/HoodieSparkSQLExample.java

@@ -0,0 +1,43 @@
+/*
+ *  Copyright (c) 2017 Uber Technologies, Inc. (hoodie-dev-group@uber.com)
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *           http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ *
+ */
+
+
+import org.apache.spark.sql.SparkSession;
+
+/**
+ * Examples to do Spark SQL on Hoodie dataset.
+ */
+public class HoodieSparkSQLExample {
+
+    public static void main(String[] args) throws Exception {
+
+        SparkSession spark = SparkSession.builder()
+                .appName("Hoodie SparkSQL")
+                .config("hive.metastore.uris","thrift://localhost:10000")
+                .config("spark.sql.hive.convertMetastoreParquet", false)
+                .enableHiveSupport()
+                .master("local[2]")
+                .getOrCreate();
+
+        spark.sql("describe hoodie_rt").show();
+        spark.sql("select * from hoodie_rt").show();
+        spark.sql("select end_lon as e1, driver, rider as r1, datestr, driver, datestr, rider, _hoodie_record_key from hoodie_rt").show();
+        spark.sql("select fare, begin_lon, begin_lat, timestamp from hoodie_rt where fare > 2.0").show();
+        spark.sql("select count(*) as cnt, _hoodie_file_name as file from hoodie_rt group by _hoodie_file_name").show();
+    }
+}