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https://jira.nuxeo.org/browse/NXP-5875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=83882#action_83882
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Olivier Grisel commented on NXP-5875:
-------------------------------------
If I do several quick consecutive page refresh I can trigger the error:
2010-11-02 15:20:29,538 INFO
[org.apache.commons.httpclient.HttpMethodDirector] I/O exception
(java.net.SocketException) caught when processing request: Too many open files
2010-11-02 15:20:29,538 INFO
[org.apache.commons.httpclient.HttpMethodDirector] Retrying request
2010-11-02 15:20:29,538 INFO
[org.apache.commons.httpclient.HttpMethodDirector] I/O exception
(java.net.SocketException) caught when processing request: Too many open files
2010-11-02 15:20:29,538 INFO
[org.apache.commons.httpclient.HttpMethodDirector] Retrying request
2010-11-02 15:20:29,538 INFO
[org.apache.commons.httpclient.HttpMethodDirector] I/O exception
(java.net.SocketException) caught when processing request: Too many open files
2010-11-02 15:20:29,538 INFO
[org.apache.commons.httpclient.HttpMethodDirector] Retrying request
2010-11-02 15:20:29,547 INFO [org.apache.shindig.gadgets.render.Renderer]
Failed to render gadget
http://localhost:8080/nuxeo/site/gadgets/userdocuments/userdocuments.xml:
Unable to retrieve spec for
http://localhost:8080/nuxeo/site/gadgets/userdocuments/userdocuments.xml. HTTP
error 504
Some panels get rendered with 504 error message. Just going away (to the
documents) and then back to the dashboard once (no multiple refreshes) "fixes"
the problem from a user perspective: those open files are the concurrent http
sockets tomcat is facing when receiving the opensocial REST queries. The fact
that tomcat is already starting with around 1200 open files makes the problem
easy to trigger from the dashboard, but the dashboard is probably not the root
cause of the issue.
However the session closing error message and the transaction warning message
look more problematic and might be related to the many open file descriptors.
> Too Many open file when accessing the dashboard under tomcat
> ------------------------------------------------------------
>
> Key: NXP-5875
> URL: https://jira.nuxeo.org/browse/NXP-5875
> Project: Nuxeo Enterprise Platform
> Issue Type: Bug
> Reporter: Thierry Delprat
> Assignee: Olivier Grisel
> Priority: Critical
> Fix For: 5.4
>
>
> The display of the dashboard does not work in the tomcat distrib : it fails
> with too many open files
> The file leak seems to come from derby files : this may be tied to Audit not
> working correctly
> => see https://jira.nuxeo.org/browse/NXP-5874
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