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This is an optional step. Eclipse has a lot of advanced features for Java development, and it makes the life much easier for Hive developers as well.
How to set up Eclipse for Hive development
Making Changes
Before you start, send a message to the Hive developer mailing list, or file a bug report in JIRA. Describe your proposed changes and check that they fit in with what others are doing and have planned for the project. Be patient, it may take folks a while to understand your requirements.
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