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[Bug 1510445] Re: OpenJDK segfaults when trying to get a fully-qualified hostname longer than 65 characters

 

So amending the 127.0.0.1 line to "127.0.0.1 <hostname> <FQDN>"in
/etc/hosts does allow Jenkins to start. If I don't include the FQDN,
then I get the below in the log, which is troubling.

Oct 30, 2015 3:10:29 PM javax.jmdns.impl.constants.DNSRecordClass classForIndex
WARNING: Could not find record class for index: -1
Oct 30, 2015 3:10:29 PM javax.jmdns.impl.DNSIncoming readAnswer
SEVERE: Could not find record class. domain: ff4d45a8-2da7-4325-8ce4-6a788f6078a7-machine-.6-c-ubuntu-oddbloke-internal^Elocal^@^@^A^A^@^@^N^P^@^D
<CC><80>^F. type: TYPE_IGNORE index 0
dns[response,10.240.0.6:5353, length=113, id=0x0, flags=0x8400:r:aa]
   0: 0000840000000001 000000004f6a756a 752d666634643435 61382d326461372d     ........ ....Ojuj u-ff4d45 a8-2da7-
  20: 343332352d386365 342d366137383866 3630373861372d6d 616368696e652d31     4325-8ce 4-6a788f 6078a7-m achine-1
  40: 362d632d7562756e 74752d6f6464626c 6f6b652d696e7465 726e616c056c6f63     6-c-ubun tu-oddbl oke-inte rnal.loc
  60: 616c000001800100 000e1000040af000 06                                    al...... ........ .

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https://bugs.launchpad.net/bugs/1510445

Title:
  OpenJDK segfaults when trying to get a fully-qualified hostname longer
  than 65 characters

Status in openjdk-7 package in Ubuntu:
  New

Bug description:
  You can see it happening twice in the jenkins.log at
  http://paste.ubuntu.com/12978388/

  I believe this is
  http://bugs.java.com/bugdatabase/view_bug.do?bug_id=7089443 upstream.

  I ran in to this problem when trying to run a Java application
  (Jenkins) in Juju on GCE because, due to the host naming conventions
  in the Juju GCE provider, the fully-qualified hostname is guaranteed
  to be over the limit.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: openjdk-7-jre-headless 7u79-2.5.6-0ubuntu1.14.04.1
  ProcVersionSignature: User Name 3.19.0-28.30~14.04.1-generic 3.19.8-ckt5
  Uname: Linux 3.19.0-28-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.16
  Architecture: amd64
  Date: Tue Oct 27 09:44:01 2015
  SourcePackage: openjdk-7
  UpgradeStatus: No upgrade log present (probably fresh install)

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References