[TAJO-812] Some methods of TajoDatabaseMetaData should result in an empty tuple list instead of SQLFeatureNotSupportedException.

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.9.0, 0.8.1
• Component/s: JDBC Driver
• Assignee: Hyunsik Choi
• Reporter: Hyunsik Choi
• Created: 07/May/14 03:50
• Updated: 08/May/14 01:40
• Resolved: 08/May/14 01:40

Description

There are some methods that Tajo cannot support. getPrimaryKeys, getExportedKeys, and getImportedKeys are examples. Currently, these methods cause SQLFeatureNotSupportedException. But, they should return an empty list instead of the exception. This patch fixes this problem.

In addition, this patch fixes some potential deadlock problem in NettyClientBase and NettyServerBase.