[HDFS-12053] Ozone: ozone server should create missing metadata directory if it has permission to

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Component/s: ozone
• Target Version/s: HDFS-7240
• Hadoop Flags: Reviewed
• Assignee: Weiwei Yang
• Reporter: Weiwei Yang
• Created: 28/Jun/17 08:40
• Updated: 26/Apr/18 21:51
• Resolved: 05/Jul/17 18:22

Description

Datanode state machine right now simple fails if container metadata directory is missing, it is better to create the directory if it has permission to. This is extremely useful at a fresh setup, usually we set ozone.container.metadata.dirs to be under same parent of dfs.datanode.data.dir. E.g

• /hadoop/hdfs/data
• /hadoop/hdfs/scm

if I don't pre-setup /hadoop/hdfs/scm/repository, ozone could not be started.