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From "Andrii Tkach (JIRA)" <>
Subject [jira] [Commented] (AMBARI-2557) Ambari fails to add second Namenode storage directory
Date Wed, 03 Jul 2013 16:08:20 GMT


Andrii Tkach commented on AMBARI-2557:

+1 for the patch.
> Ambari fails to add second Namenode storage directory 
> ------------------------------------------------------
>                 Key: AMBARI-2557
>                 URL:
>             Project: Ambari
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 1.2.3
>            Reporter: Andrii Babiichuk
>            Assignee: Andrii Babiichuk
>             Fix For: 1.2.5
>         Attachments: AMBARI-2557.patch
> 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.
> 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.
> 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></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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