<!--- # 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. -->

Apache Hadoop 0.20.3 Release Notes

These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements.

---

• HADOOP-6382 | Major | publish hadoop jars to apache mvn repo.

The hadoop jars are renamed from previous hadoop-<version>-<name>.jar to hadoop-<name>-<version>.jar. Applications and documentation need to be updated to use the new file naming scheme.

---

• HDFS-132 | Minor | Namenode in Safemode reports to Simon non-zero number of deleted files during startup

With this incompatible change, under metrics context "dfs", the record name "FSDirectory" is no longer available. The metrics "files_deleted" from the deleted record "FSDirectory" is now available in metrics context "dfs", record name "namenode" with the metrics name "FilesDeleted".

---

• HADOOP-6701 | Minor | ** Incorrect exit codes for "dfs -chown", "dfs -chgrp"**

Commands chmod, chown and chgrp now returns non zero exit code and an error message on failure instead of returning zero.