|
@@ -0,0 +1,47 @@
|
|
|
+/*
|
|
|
+ * 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.fs;
|
|
|
+
|
|
|
+import org.apache.hadoop.classification.InterfaceAudience;
|
|
|
+import org.apache.hadoop.classification.InterfaceStability;
|
|
|
+import org.apache.hadoop.io.Text;
|
|
|
+
|
|
|
+/**
|
|
|
+ * This class contains constants for configuration keys and default values.
|
|
|
+ */
|
|
|
+@InterfaceAudience.LimitedPrivate({"YARN", "HDFS"})
|
|
|
+@InterfaceStability.Evolving
|
|
|
+public final class HdfsCommonConstants {
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Represents the kind of delegation token used for HDFS.
|
|
|
+ * This is a constant string value "HDFS_DELEGATION_TOKEN".
|
|
|
+ */
|
|
|
+ public static final Text HDFS_DELEGATION_KIND =
|
|
|
+ new Text("HDFS_DELEGATION_TOKEN");
|
|
|
+
|
|
|
+ /**
|
|
|
+ * DFS_ADMIN configuration: {@value}.
|
|
|
+ */
|
|
|
+ public static final String DFS_ADMIN = "dfs.cluster.administrators";
|
|
|
+
|
|
|
+ private HdfsCommonConstants() {
|
|
|
+ }
|
|
|
+
|
|
|
+}
|