[jira] [Commented] (HDFS-8067) haadmin commands doesn't work in Federation with HA

["Ajith S (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDFS-8067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14481175#comment-14481175 ] 

Ajith S commented on HDFS-8067:
-------------------------------

After analysis i found that the cause is 

{code:title=NNHAServiceTarget.java|borderStyle=solid}
 public NNHAServiceTarget(Configuration conf,
      String nsId, String nnId) {
    Preconditions.checkNotNull(nnId);
    
    if (nsId == null) {
      nsId = DFSUtil.getOnlyNameServiceIdOrNull(conf);
      if (nsId == null) {
        throw new IllegalArgumentException(
            "Unable to determine the nameservice id.");
      }
    }
......
{code}


Here, by using {code:} getOnlyNameServiceIdOrNull(conf) {code} to determine the nameserviceID, when configured in a Federated setup which has multiple nameservices, returns null. This was updated as part of HDFS-3084 
I am thinking to change it to {code:} getNamenodeNameServiceId(conf) {code}  

Please suggest

> haadmin commands doesn't work in Federation with HA
> ---------------------------------------------------
>
>                 Key: HDFS-8067
>                 URL: https://issues.apache.org/jira/browse/HDFS-8067
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Ajith S
>            Assignee: Ajith S
>
> Scenario : Setting up multiple nameservices with HA configuration for each nameservice (manual failover)
> After starting the journal nodes and namenodes, both the nodes are in standby mode. 
> all the following haadmin commands
>  *haadmin*
>    -transitionToActive
>    -transitionToStandby 
>    -failover 
>    -getServiceState 
>    -checkHealth  
> failed with exception
> _Illegal argument: Unable to determine the nameservice id._



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