Siddharth Wagle created AMBARI-17888:
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Summary: Create configuration flag to prevent changing of
directory permissions
Key: AMBARI-17888
URL: https://issues.apache.org/jira/browse/AMBARI-17888
Project: Ambari
Issue Type: Task
Components: ambari-agent
Affects Versions: 2.2.2
Reporter: Siddharth Wagle
Fix For: 2.4.0
A common method of addressing failed disks, which is to set unwritable
permissions on a directory such as /hadoop10 within the root filesystem.
Once mounted, the mounted filesystem will overlay the correct permissions
structure, allowing hdfs to write to the mounted disk.
In the case of a failed mount operation, the associated /hadoop10 directory
will be unwritable by hdfs.
However, Ambari will see the visible directory with incorrect permissions, and
"fix" the permissions back to a writable directory-- resulting in the datanode
filling the root partition of a machine.
We need to prevent ambari from changing permissions on YARN local and HDFS data
dirs.
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