[HDFS-2173] saveNamespace should not throw IOE when only one storage directory fails to write VERSION file

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Edit log branch (HDFS-1073), 0.23.0
• Fix Version/s: 2.9.0, 3.0.0-alpha1
• Target Version/s: 2.8.0
• Assignee: Andras Bokor
• Reporter: Todd Lipcon
• Created: 20/Jul/11 00:38
• Updated: 30/Aug/16 01:43
• Resolved: 18/May/16 21:14

Description

This JIRA tracks a TODO in TestSaveNamespace. Currently, if, while writing the VERSION files in the storage directories, one of the directories fails, the entire operation throws IOE. This is unnecessary – instead, just that directory should be marked as failed.

This is targeted to be fixed after HDFS-1073 is merged to trunk, since it does not ever dataloss, and would rarely occur in practice (the dir would have to fail between writing the fsimage file and writing VERSION)

Issue Links

• relates to: HDFS-2170 1073: Address remaining TODOs
• relates to: HDFS-10425 Clean up NNStorage and TestSaveNamespace