[HBASE-19740] Repeated error message for NamespaceExistException

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.0.0-beta-1, 2.0.0
• Hadoop Flags: Reviewed
• Assignee: Ted Yu
• Reporter: Ted Yu
• Created: 09/Jan/18 18:32
• Updated: 01/Aug/18 06:21
• Resolved: 11/Jan/18 02:27

Description

The following can be observed in TestAsyncNamespaceAdminApi test output:

2018-01-09 07:55:08,685 INFO  [Default-IPC-NioEventLoopGroup-5-2] client.RawAsyncHBaseAdmin$NamespaceProcedureBiConsumer(2374): Operation: CREATE_NAMESPACE, Namespace: TestNamespacens1 failed with Namespace Namespace TestNamespacens1 already exists already exists

This was due to ForeignExceptionUtil.toIOException() recreating NamespaceExistException, resulting in "already exists" appended one more time.