[AMBARI-23413] Moving Hive Metastore gets hanged in Ambari due to Uncaught TypeError: Cannot read property 'tag' of undefined

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: trunk, 2.7.0
• Component/s: ambari-server, ambari-web
• Labels: ambari-web pull-request-available
• Assignee: Jay SenSharma
• Reporter: Jay SenSharma
• Created: 30/Mar/18 11:43
• Updated: 23/Oct/18 16:08

Description

In Ambari 2.7, when we try to move the Hive Metastore to a new host then at Wizard Step-3 it hangs. When we look at the ambari UI Browser Developer Console then we notice the following error:

app.js:31183 Uncaught TypeError: Cannot read property 'tag' of undefined
    at app.js:31183
    at Array.forEach (<anonymous>)
    at Class.getConfigUrlParams (app.js:31182)
    at Class.onLoadConfigsTags (app.js:31167)
    at Class.opt.success (app.js:180694)
    at fire (vendor.js:1141)
    at Object.fireWith [as resolveWith] (vendor.js:1252)
    at done (vendor.js:8178)
    at XMLHttpRequest.callback (vendor.js:8702)

On further debugging it is found that when the site = webhcat-site then it shows this error because this site is not present inside the desired_configs. Hence there should be a check before attempting to read it's tag information.

Steps to Reproduce the issue:

• Install Hive Service to the cluster.
• Now attempt to move the Hive MetaStore to another host using ambari UI.

Issue Links

• links to: GitHub Pull Request #843
• links to: Github Pull Request #843