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https://issues.jenkins-ci.org/browse/JENKINS-13097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=160302#comment-160302
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Kohsuke Kawaguchi commented on JENKINS-13097:
---------------------------------------------
Making it critical to consider backporting for LTS.
> File handle leak in serving static files
> ----------------------------------------
>
> Key: JENKINS-13097
> URL: https://issues.jenkins-ci.org/browse/JENKINS-13097
> Project: Jenkins
> Issue Type: Bug
> Components: core
> Reporter: Kohsuke Kawaguchi
> Priority: Critical
>
> {noformat}
> at java.io.FileInputStream.<init>(FileInputStream.java:121)
> at java.io.FileInputStream.<init>(FileInputStream.java:79)
> at
> sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:70)
> at
> sun.net.www.protocol.file.FileURLConnection.initializeHeaders(FileURLConnection.java:90)
> at
> sun.net.www.protocol.file.FileURLConnection.getHeaderField(FileURLConnection.java:126)
> at
> sun.net.www.protocol.jar.JarURLConnection.getHeaderField(JarURLConnection.java:203)
> at java.net.URLConnection.getHeaderFieldDate(URLConnection.java:603)
> at java.net.URLConnection.getLastModified(URLConnection.java:532)
> at org.kohsuke.stapler.Stapler.serveStaticResource(Stapler.java:241)
> at org.kohsuke.stapler.Stapler.serveStaticResource(Stapler.java:252)
> at org.kohsuke.stapler.ResponseImpl.serveFile(ResponseImpl.java:132)
> at
> org.kohsuke.stapler.framework.adjunct.AdjunctManager.doDynamic(AdjunctManager.java:129)
> at sun.reflect.GeneratedMethodAccessor276.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> {noformat}
> There's a file handle leak in {{Stapler.serveStaticResource}} that badly
> affects busy instances. I've fixed this in Stapler 1.182.
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