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https://issues.jenkins-ci.org/browse/JENKINS-12696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=158827#comment-158827
]
James Blair commented on JENKINS-12696:
---------------------------------------
Here's the thread dump for the whole system (which may be more readable):
http://paste.openstack.org/show/4748/
> Cron thread can get stuck making a connection
> ---------------------------------------------
>
> Key: JENKINS-12696
> URL: https://issues.jenkins-ci.org/browse/JENKINS-12696
> Project: Jenkins
> Issue Type: Bug
> Components: url-change-trigger
> Environment: Jenkins 1.450, url-change-trigger 1.2
> Reporter: James Blair
> Assignee: dfabulich
>
> Polling an HTTPS URL for changes can cause the entire cron thread to get
> stuck during a connection attempt. Here is a thread dump of a cron thread
> that was stuck for more than 5 hours (and likely to be stuck indefinitely):
> "Jenkins cron thread" Id=22 Group=main RUNNABLE (in native)
> at java.net.SocketInputStream.socketRead0(Native Method)
> at java.net.SocketInputStream.read(SocketInputStream.java:146)
> at sun.security.ssl.InputRecord.readFully(InputRecord.java:312)
> at sun.security.ssl.InputRecord.readV3Record(InputRecord.java:424)
> at sun.security.ssl.InputRecord.read(InputRecord.java:379)
> at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:850)
> - locked java.lang.Object@2213b7b7
> at
> sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1190)
> - locked java.lang.Object@3c8260db
> at
> sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1217)
> at
> sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1201)
> at
> sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:440)
> at
> sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
> at
> sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1139)
> - locked sun.net.www.protocol.https.DelegateHttpsURLConnection@2fb65e1d
> at
> sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
> - locked sun.net.www.protocol.https.HttpsURLConnectionImpl@43998053
> at java.net.URL.openStream(URL.java:1029)
> at com.redfin.hudson.UrlChangeTrigger.run(UrlChangeTrigger.java:63)
> at hudson.triggers.Trigger.checkTriggers(Trigger.java:250)
> at hudson.triggers.Trigger$Cron.doRun(Trigger.java:198)
> at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:54)
> at java.util.TimerThread.mainLoop(Timer.java:534)
> at java.util.TimerThread.run(Timer.java:484)
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