James Blair created JENKINS-12696:
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Summary: 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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