Andrew Onischuk created AMBARI-17550:
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Summary: While changing NN, DN directories from UI, proper warning
should be present for invalid values
Key: AMBARI-17550
URL: https://issues.apache.org/jira/browse/AMBARI-17550
Project: Ambari
Issue Type: Bug
Reporter: Andrew Onischuk
Assignee: Andrew Onischuk
Fix For: 2.4.0
Attachments: AMBARI-17550.patch
While changing NN and DN directories from ambari, for example:
changing dn directories from **/grid/0/hadoop/hdfs/data** to **/grid/0/hadoop/
hdfs/data,/grid/0/hadoop/hdfs/data1,/grid/0/hadoop/hdfs/data2**
The values are changed without being validated
This leads to datanodes start failing
Traceback (most recent call last):
File
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/datanode.py",
line 174, in <module>
DataNode().execute()
File
"/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py",
line 280, in execute
method(env)
File
"/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py",
line 709, in restart
self.start(env, upgrade_type=upgrade_type)
File
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/datanode.py",
line 60, in start
self.configure(env)
File
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/datanode.py",
line 55, in configure
datanode(action="configure")
File "/usr/lib/python2.6/site-packages/ambari_commons/os_family_impl.py",
line 89, in thunk
return fn(*args, **kwargs)
File
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/hdfs_datanode.py",
line 53, in datanode
data_dir_to_mount_file_content = handle_mounted_dirs(create_dirs,
params.dfs_data_dirs, params.data_dir_mount_file, params)
File
"/usr/lib/python2.6/site-packages/resource_management/libraries/functions/mounted_dirs_helper.py",
line 158, in handle_mounted_dirs
raise Fail(message + " . Please turn off
cluster-env/one_dir_per_partition or handle the situation manually.")
resource_management.core.exceptions.Fail: Trying to create another
directory on the following mount: /grid/0 . Please turn off
cluster-env/one_dir_per_partition or handle the situation manually.
The test fails because it set invalid value, and the directory was not created
A warning message informing why the new directory name is invalid could be
useful
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