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https://issues.apache.org/jira/browse/AMBARI-6131?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jaimin D Jetly updated AMBARI-6131:
-----------------------------------
Description:
*Cause of the Bug:*
With some unknown prior actions on the cluster on host page load,
[code|https://git-wip-us.apache.org/repos/asf/ambari/repo?p=ambari.git;a=blob;f=ambari-web/app/views/main/host.js;h=8a4d01e1548e4f29b601f2cafc827f7588e92896;hb=HEAD#l101]
returns one of it's elements as plain ember object with no property set (not
even iColumn key). This breaks the [code|
https://git-wip-us.apache.org/repos/asf/ambari/repo?p=ambari.git;a=blob;f=ambari-web/app/views/main/host.js;h=8a4d01e1548e4f29b601f2cafc827f7588e92896;hb=HEAD#l107]
ahead. Over here in one of the iteration we are trying to find an element in
childviews array whose *column* value is undefined. There are many such
elements in childviews array. So it picks up the first element
{{App.HostTableMenuView}} and schedules to call showClearFilter function later
because of Ember.run.next loop. When the run queue is dequeued to execute this
callback methods, the very first callback method "showClearFilter function for
App.HostTableMenuView class" fails with Js error and other pending callback
methods are not executed nor flushed by Ember.
When the next time ember.run.next is executed in the code (normally this
happens by routing to other page), stale callbacks with no data binding is
invoked and again leads to JS error at
[code|https://git-wip-us.apache.org/repos/asf/ambari/repo?p=ambari.git;a=blob;f=ambari-web/app/views/main/host.js;h=8a4d01e1548e4f29b601f2cafc827f7588e92896;hb=HEAD#l562].
> Services page intermittently loaded with empty content
> ------------------------------------------------------
>
> Key: AMBARI-6131
> URL: https://issues.apache.org/jira/browse/AMBARI-6131
> Project: Ambari
> Issue Type: Bug
> Components: client
> Affects Versions: 1.6.1
> Reporter: Jaimin D Jetly
> Assignee: Jaimin D Jetly
> Fix For: 1.6.1
>
> Attachments: AMBARI-6131.patch
>
>
> *Cause of the Bug:*
> With some unknown prior actions on the cluster on host page load,
> [code|https://git-wip-us.apache.org/repos/asf/ambari/repo?p=ambari.git;a=blob;f=ambari-web/app/views/main/host.js;h=8a4d01e1548e4f29b601f2cafc827f7588e92896;hb=HEAD#l101]
> returns one of it's elements as plain ember object with no property set (not
> even iColumn key). This breaks the [code|
> https://git-wip-us.apache.org/repos/asf/ambari/repo?p=ambari.git;a=blob;f=ambari-web/app/views/main/host.js;h=8a4d01e1548e4f29b601f2cafc827f7588e92896;hb=HEAD#l107]
> ahead. Over here in one of the iteration we are trying to find an element in
> childviews array whose *column* value is undefined. There are many such
> elements in childviews array. So it picks up the first element
> {{App.HostTableMenuView}} and schedules to call showClearFilter function
> later because of Ember.run.next loop. When the run queue is dequeued to
> execute this callback methods, the very first callback method
> "showClearFilter function for App.HostTableMenuView class" fails with Js
> error and other pending callback methods are not executed nor flushed by
> Ember.
> When the next time ember.run.next is executed in the code (normally this
> happens by routing to other page), stale callbacks with no data binding is
> invoked and again leads to JS error at
> [code|https://git-wip-us.apache.org/repos/asf/ambari/repo?p=ambari.git;a=blob;f=ambari-web/app/views/main/host.js;h=8a4d01e1548e4f29b601f2cafc827f7588e92896;hb=HEAD#l562].
>
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