[HDFS-7610] Fix removal of dynamically added DN volumes

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.7.0, 2.6.1, 3.0.0-alpha1
• Component/s: datanode
• Labels: 2.6.1-candidate
• Target Version/s: 2.7.0
• Assignee: Lei (Eddy) Xu
• Reporter: Lei (Eddy) Xu
• Created: 14/Jan/15 20:58
• Updated: 30/Aug/16 01:39
• Resolved: 21/Jan/15 04:16

Description

In the hot swap feature, FsDatasetImpl#addVolume uses the base volume dir (e.g. "/foo/data0", instead of volume's current dir "/foo/data/current" to construct FsVolumeImpl. As a result, DataNode can not remove this newly added volume, because its FsVolumeImpl#getBasePath returns "/foo".