Alejandro Fernandez created AMBARI-6926:
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Summary: HDFS to check data paths are mounted correctly
Key: AMBARI-6926
URL: https://issues.apache.org/jira/browse/AMBARI-6926
Project: Ambari
Issue Type: Improvement
Components: agent
Affects Versions: 1.6.1
Reporter: Alejandro Fernandez
Assignee: Alejandro Fernandez
Fix For: 1.7.0
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 version, Ambari will have a check to detect when the HDFS data
directories are either under the root mount, or more than one directory is
under the same mount.
For example,
* if no external drives are mounted, then /hadoop/hdfs/data will be under the
root.
* if the paths are /hadoop/hdfs/data1 and /hadoop/hdfs/data2, but /hadoop/hdfs
is the mount point, then the directories are under the same mount, which is a
conflict.
For now, add a "Check Mount" button to the "Service Actions" dropdown for HDFS
that will run on all of the datanodes.
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