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https://issues.apache.org/jira/browse/AMBARI-7070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14116698#comment-14116698
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Clint Shumack commented on AMBARI-7070:
---------------------------------------
I tested it again with 48 cores (it works) and then with 49 cores (it fails)
and I found these differences:
ambari-server.log on 48 cores
{quote}
....
INFO [main] AbstractConnector:338 - Started [email protected]:8080
....
{quote}
ambari-server.log on 49 cores
{quote}
....
WARN [main] AbstractConnector:335 - insufficient threads configured for
[email protected]:8080
INFO [main] AbstractConnector:338 - Started [email protected]:8080
....
{quote}
ambari-agent.log on 48 cores
{quote}
....
Controller.py:271 - Response from server = OK
INFO PythonExecutor.py:78 - Running command ['/usr/bin/python2.6',
u'/var/lib/ambari-agent/cache/stacks/HDP/2.1/services/FALCON/package/scripts/falcon_server.py',
'STATUS',
'/var/lib/ambari-agent/data/status_command.json',
u'/var/lib/ambari-agent/cache/stacks/HDP/2.1/services/FALCON/package',
'/var/lib/ambari-agent/data/structured-out-status.json',
INFO PythonExecutor.py:112 - Result: {'structuredOut': {}, 'stdout': '',
'stderr': '', 'exitcode': 0}
....
_(log file continues like this for a while)_
....
INFO PythonExecutor.py:112 - Result: {'structuredOut': {}, 'stdout': '',
'stderr': '', 'exitcode': 0}
_(end of log)_
{quote}
ambari-agent.log on 49 cores
{quote}
....
INFO Controller.py:271 - Response from server = OK
INFO Heartbeat.py:76 - Sending heartbeat with response id: 0 and timestamp:
1409360953048. Command(s) in progress: False. Components mapped: False
_(end of log)_
{quote}
I hope this is helpful.
> Cannot view Ambari web interface with more than 48 CPU cores.
> -------------------------------------------------------------
>
> Key: AMBARI-7070
> URL: https://issues.apache.org/jira/browse/AMBARI-7070
> Project: Ambari
> Issue Type: Bug
> Affects Versions: 1.6.1
> Environment: CentOS 6.5 Kernel 2.6.32-431.23.3.el6.x86_64, qemu-kvm
> virtual machine on Dell PowerEdge C6145 Opteron 6376
> Reporter: Clint Shumack
> Labels: newbie
>
> I am running Ambari and the full hadoop stack in a virtual machine on my
> 64-core server for evaluation before I deploy it to the base OS. When I set
> it up with a 4-core virtual machine it worked perfectly, however after
> increasing the core count to 64 I could no longer log in to Ambari. The
> browser seems to be attempting to load the page but receiving no response. I
> can't see anything unusual in the logs. I found that it works with up to 48
> cores, but no more.
> I have a second identical virtual machine running just the hadoop client
> software with 64 cores without problems, so this looks like a bug in the
> Ambari web interface. Has anyone else experienced this?
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