[HDFS-15450] Fix NN trash emptier to work if ViewFSOveroadScheme enabled

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.1
• Fix Version/s: 3.2.2, 3.3.1, 3.4.0
• Component/s: namenode, viewfsOverloadScheme
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed
• Assignee: Uma Maheswara Rao G
• Reporter: Uma Maheswara Rao G
• Created: 01/Jul/20 22:39
• Updated: 10/Jun/21 07:44
• Resolved: 04/Jul/20 20:47

Description

When users add mount links only fs.defautFS, in HA NN, it will initialize trashEmptier with RPC address set to defaultFS. It will fail to start because we might not have configure any mount links with RPC address based URI.

Issue Links

• breaks: MAPREDUCE-7284 TestCombineFileInputFormat#testMissingBlocks fails
• links to: GitHub Pull Request #2120