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https://issues.apache.org/jira/browse/AMBARI-9255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14287306#comment-14287306
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Jeff Sposetti commented on AMBARI-9255:
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Hi, Can you post a screen shot? Any errors in your browser JavaScript console?
> Show why Configs Save button is disabled
> ----------------------------------------
>
> Key: AMBARI-9255
> URL: https://issues.apache.org/jira/browse/AMBARI-9255
> Project: Ambari
> Issue Type: Improvement
> Affects Versions: 1.7.0
> Reporter: Taeyun Kim
> Priority: Minor
>
> After YARN Configs is changed and saved, there is a case that the saved
> configuration itself bacomes invalid state(for example, some config value is
> missing).
> In my case, the missing one was 'yarn.resourcemanager.fs.state-store.uri'.
> But that variable is hidden in the folded 'Advanced yarn-site' group, so
> there is no clue that some variable has incorrect or missing value.
> So when I change an another config value, Discard button is enabled, but Save
> button is not enabled. But I see no clue why.
> Here, there are 2 problems:
> 1. Incorrect state is saved by UI. It should not happen.
> 2. Sometimes it's hard to see what is wrong that's preventing Save.
> So, at least for the 2nd problem, it would be nice to show what is wrong.
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