[AMBARI-25523] Ambari UI keeps loading at step3 while adding the new namespace for HDFS for the second time

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.5
• Fix Version/s: 2.8.0
• Component/s: ambari-web
• Assignee: Szabolcs Beki
• Reporter: Akhil Naik
• Created: 15/Jun/20 06:46
• Updated: 19/Nov/22 17:56
• Resolved: 19/Nov/22 17:56

Description

Problem Statement : I am Trying to add namespace to HDFS via Ambari, my HDFS already have two namespaces : namespace1,namespace2 . when i am trying to add the third one say : namespace3, it fails with below script error at Step3:

app.js:5310 Uncaught TypeError: Cannot read property 'split' of undefined
    at Class.prepareDependencies (app.js:5310)
    at Class.tweakServiceConfigs (app.js:5337)
    at Class.onLoad (app.js:5293)
    at invokeAction (vendor.js:15179)
    at iterateSet (vendor.js:15161)
    at Object.sendEvent (vendor.js:15278)
    at notifyObservers (vendor.js:13870)
    at Object.Ember.notifyObservers (vendor.js:13985)
    at Object.propertyDidChange (vendor.js:14618)
    at set (vendor.js:13424)

Analysis : Upon analysing the code : https://github.com/apache/ambari/blob/release-2.7.5/ambari-web/app/controllers/main/admin/federation/step3_controller.js#L110

It looks we are blindly taking 0th nameService as the one that have namenode1 and namenode2 and then assiging the namenode1 and namenode2 :

    var nameServices = App.HDFSService.find().objectAt(0).get('masterComponentGroups').mapProperty('name');
    ret.nameServicesList = nameServices.join(',');
    ret.nameservice1 = nameServices[0];
    ret.newNameservice = this.get('content.nameServiceId');
    ret.namenode1 = hdfsSiteConfigs['dfs.namenode.rpc-address.' + ret.nameservice1 + '.nn1'].split(':')[0];
    ret.namenode2 = hdfsSiteConfigs['dfs.namenode.rpc-address.' + ret.nameservice1 + '.nn2'].split(':')[0];

The abouve logic is wrong, when you try to fetch `nameServices` as abouve the order is not neccessarly the way it was created

This logic need to rewramped.

Issue Links

• links to: GitHub PR#3547
• links to: GitHub PR: #3235