Andrii Babiichuk created AMBARI-2557:
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Summary: Ambari fails to add second Namenode storage directory
Key: AMBARI-2557
URL: https://issues.apache.org/jira/browse/AMBARI-2557
Project: Ambari
Issue Type: Bug
Components: client
Affects Versions: 1.2.3
Reporter: Andrii Babiichuk
Assignee: Andrii Babiichuk
Fix For: 1.2.5
PROBLEM: When using Ambari UI to add second NameNode storage directory, Ambari
fails to produce correct configuration in hdfs-site.xml
BUSINESS IMPACT: users might not be able to take advantage of the feature and
add second NameNode storage directory.
STEPS TO REPRODUCE:
1. Stop HDFS and MapReduce on the cluster
2. Go to Ambari UI and navigate to Services Tab and select HDFS
3. Click on Configs Tab under HDFS
4. Add second NameNode storage directory using format below:
/hadoop/hdfs/namenode
/hadoop1/hdfs/namenode
5. Save configuration
6. Start HDFS
ACTUAL BEHAVIOR: Ambari fails to start HDFS.
EXPECTED BEHAVIOR: To be able to make configuration change and to start HDFS.
SUPPORT ANALYSIS:
Configuration in UI was done similar as during installation process - not using
comma separated values. However, this is not transfered correctly to
hdfs-site.xml. See below the configuration produced by Ambari:
</property>
<property>
<name>dfs.name.dir</name>
<value>/hadoop/hdfs/namenode
/hadoop1/hdfs/namenode</value>
</property>
Please note that the values are not comma separated as needed for correct
configuration to work.
I was able to make configuration work by making following config in UI:
/hadoop/hdfs/namenode,/hadoop1/hdfs/namenode
This produced correct config in hdfs-site.xml.
Please note that during installation input values entering one location per
line and produces correct configuration. Also, there is no guidance in UI to
specify how to configure this correctly.
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