[HDFS-7632] MiniDFSCluster configures DataNode data directories incorrectly if using more than 1 DataNode and more than 2 storage locations per DataNode.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.7.0
• Component/s: test
• Target Version/s: 2.7.0
• Hadoop Flags: Reviewed
• Assignee: Chris Nauroth
• Reporter: Chris Nauroth
• Created: 16/Jan/15 06:11
• Updated: 10/Apr/15 20:30
• Resolved: 16/Jan/15 19:04

Description

MiniDFSCluster allows the caller to set the number of storage locations per DataNode. If this number is set higher than 2, and if the cluster is configured with more than 1 DataNode, then the calculation of the storage directory paths will be incorrect. Multiple DataNodes will attempt to use the same storage directory, and one of them will fail while trying to acquire the file lock.

Issue Links

• is required by: HDFS-7604 Track and display failed DataNode storage locations in NameNode.
• requires: HDFS-7635 Remove TestCorruptFilesJsp from branch-2.