HDFS-8023. Erasure Coding: retrieve eraure coding schema for a file from NameNode (Contributed by Vinayakumar B)

Added missed file

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/ECInfo.java

@@ -0,0 +1,41 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ */
+package org.apache.hadoop.hdfs.protocol;
+
+import org.apache.hadoop.io.erasurecode.ECSchema;
+
+/**
+ * Class to provide information, such as ECSchema, for a file/block.
+ */
+public class ECInfo {
+  private final String src;
+  private final ECSchema schema;
+
+  public ECInfo(String src, ECSchema schema) {
+    this.src = src;
+    this.schema = schema;
+  }
+
+  public String getSrc() {
+    return src;
+  }
+
+  public ECSchema getSchema() {
+    return schema;
+  }
+}