[AMBARI-7506] Ambari DataNode shouldn't create dfs.data.dir paths after installation when path becomes unmounted

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6.1
• Fix Version/s: 1.7.0
• Component/s: ambari-server
• Assignee: Alejandro Fernandez
• Reporter: Alejandro Fernandez
• Created: 26/Sep/14 00:42
• Updated: 02/Jul/15 04:48
• Resolved: 01/Oct/14 17:52

Description

When a drive fails and it is unmounted for service, if the data node process is stopped/started using Ambari the dfs.data.dir path that was housed on that drive is re-created, but this time on the / partition leading to out of disk space issues and data being created on the wrong volume.
In this case we only want the Ambari Agent to create dfs.data.dir's during installation, and not after as this makes drive replacements difficult.

Issue Links

• is related to: AMBARI-12252 Prevent datanode from creating an HDFS datadir when drive becomes unmounted
• is related to: AMBARI-10143 DataNode fails to start because of lowercase conversion of data dir path in data_dir_mount_file.
• links to: Code Review patch