Refactor Hadoop packstructure and source tree.
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Key: HADOOP-2884
URL: https://issues.apache.org/jira/browse/HADOOP-2884
Project: Hadoop Core
Issue Type: Improvement
Reporter: Sanjay Radia
Assignee: Sanjay Radia
Priority: Minor
Fix For: 0.17.0
This Jira proposes refactoring the Hadoop package structure and source tree
Goals
1. A little finer package structure.
- Current structure is a little flat
- Smaller files (name node and data node are way too big)
2. The client interfaces and data types sent across the wire should be clearly
identifiable by the package they sit in.
3. Split dfs's client and server side jars.
4. Move map-reduce into separate src tree (but same SVN repository) along with
its separate jar.
5. The Javadoc for users of Hadoop should not contain the internal server-side
interfaces/classes
6. Fix all compiler warnings
7. Fix/minimize findbug warnings
The top level package structure remains unchanged:
hadoop.fs
hadoop.dfs
hadoop.mapred
Etc.
Considered changing hadoop.dfs to hadoop.hdfs but the "h" does not really add
much since hadoop is already part of the package name; didn't seem worth going
to
through the trouble of breaking compatibility.
Changes will occur internally within the above packages.
sub-Jira xxx proposes restrucutures dfs.
Other Jiras will be filed for restructuring other parts.
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