HDDS-4910. ofs add PosixRootedOzoneFileSystem to support fuse cp. (#1994)
diff --git a/hadoop-ozone/ozonefs/src/main/java/org/apache/hadoop/fs/ozone/PosixRootedOzoneFileSystem.java b/hadoop-ozone/ozonefs/src/main/java/org/apache/hadoop/fs/ozone/PosixRootedOzoneFileSystem.java
new file mode 100644
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--- /dev/null
+++ b/hadoop-ozone/ozonefs/src/main/java/org/apache/hadoop/fs/ozone/PosixRootedOzoneFileSystem.java
@@ -0,0 +1,50 @@
+/*
+ * 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.ozone;
+
+import org.apache.hadoop.fs.FSDataOutputStream;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.permission.FsPermission;
+import org.apache.hadoop.util.Progressable;
+
+import java.io.IOException;
+
+/**
+ * The PosixRootedOzoneFileSystem implementation.
+ * The create function in this class overrides
+ * the create function of RootedOzoneFileSystem class.
+ * This create function first creates a file, then
+ * closes it and again calls the create function
+ * of super class.
+ */
+
+public class PosixRootedOzoneFileSystem extends RootedOzoneFileSystem {
+
+ @Override
+ public FSDataOutputStream create(Path f, FsPermission permission,
+ boolean overwrite, int bufferSize, short replication, long blockSize,
+ Progressable progress) throws IOException {
+
+ FSDataOutputStream cstream = super.create(f, permission, overwrite,
+ bufferSize, replication, blockSize, progress);
+ cstream.close();
+ return super.create(f, permission, overwrite, bufferSize,
+ replication, blockSize, progress);
+ }
+}
