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https://issues.apache.org/jira/browse/AMBARI-517?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vikram Dixit K resolved AMBARI-517.
-----------------------------------
Resolution: Fixed
Fix Version/s: ambari-186
Assignee: vitthal (Suhas) Gogate
Committed. Thanks Suhas!
> Dashboard shows HDFS is down though it's still running
> ------------------------------------------------------
>
> Key: AMBARI-517
> URL: https://issues.apache.org/jira/browse/AMBARI-517
> Project: Ambari
> Issue Type: Bug
> Affects Versions: ambari-186
> Reporter: vitthal (Suhas) Gogate
> Assignee: vitthal (Suhas) Gogate
> Fix For: ambari-186
>
> Attachments: AMBARI-517.patch
>
>
> This defect occasionally occurs when the jmx over http call to respective
> service master times out due to load on the service master or network
> problem. e.g. error message in the httpd/error_log file is,
> error_log:Mon Jun 04 12:56:07 2012 error client 24.7.53.89
> hdp_mon_jmx_helpers.inc:522hdp_mon_jmx_get_jmx_data: Error when accessing jmx
> info: , url=http://ec2-72-44-58-186.compute-1.amazonaws.com:60010/jmx,
> errno=28, error=Operation timed out after 1 seconds with 0 bytes received,
> referer:
> http://ec2-72-44-58-186.compute-1.amazonaws.com/hdp/dashboard/ui/home.html
> Solution for this is to increase the timeout (currently 1 sec) to 2 or 3
> seconds. Although drawback of increasing timeout is, when one of the services
> (HDFS, MR, HBASE) is down, backend call will always timeout for that service
> and so will take that much time to load the page. Although this is not a
> common scenario to have one of the installed services down for long time, I
> would recommend to increase the timeout to 3 secs to lower the chances of
> happening this problem on the slower nodes and network.
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