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Subject [GitHub] [incubator-hudi] nsivabalan commented on a change in pull request #1176: [HUDI-430] Adding InlineFileSystem to support embedding any file format as an InlineFile
Date Fri, 20 Mar 2020 01:11:49 GMT
nsivabalan commented on a change in pull request #1176: [HUDI-430] Adding InlineFileSystem
to support embedding any file format as an InlineFile

 File path: hudi-utilities/src/main/java/org/apache/hudi/utilities/inline/fs/
 @@ -0,0 +1,133 @@
+ * 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
+ *
+ *
+ *
+ * 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.hudi.utilities.inline.fs;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FSDataInputStream;
+import org.apache.hadoop.fs.FSDataOutputStream;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.permission.FsPermission;
+import org.apache.hadoop.util.Progressable;
+ * Enables reading any inline file at a given offset and length. This {@link FileSystem}
is used only in read path and does not support
+ * any write apis.
+ * <p>
+ * - Reading an inlined file at a given offset, length, read it out as if it were an independent
file of that length
+ * - Inlined path is of the form "inlinefs:///path/to/outer/file/<outer_file_scheme>/inline_file/?start_offset=<start_offset>&length=<length>
+ * <p>
+ * TODO: The reader/writer may try to use relative paths based on the inlinepath and it may
not work. Need to handle
+ * this gracefully eg. the parquet summary metadata reading. TODO: If this shows promise,
also support directly writing
+ * the inlined file to the underneath file without buffer
+ */
+public class InlineFileSystem extends FileSystem {
+  static final String SCHEME = "inlinefs";
 Review comment:
   yes, I have fixed the scheme issue. Can you check once I have addressed all comments.

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