[HADOOP-8299] ViewFileSystem link slash mount point crashes with IndexOutOfBoundsException

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 3.0.0-alpha2, 2.10.1
• Component/s: viewfs
• Target Version/s: 3.0.0-alpha2
• Assignee: Manoj Govindassamy
• Reporter: Eli Collins
• Created: 20/Apr/12 21:26
• Updated: 22/Feb/22 19:56
• Resolved: 26/Oct/16 21:25

Description

We currently assume a typical viewfs client configuration is a set of non-overlapping mounts. This means every time you want to add a new top-level directory you need to update the client-side mountable config. If users could specify a slash mount, and then add additional mounts as necessary they could add a new top-level directory without updating all client configs (as long as the new top-level directory was being created on the NN the slash mount points to). This could be achieved by HADOOP-8298 (merge mounts, since we're effectively merging all new mount points with slash) or having the notion of a "default NN" for a mount table.

Issue Links

• relates to: HADOOP-14136 Default FS For ViewFS