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I am running the famous Jenkins server that tests Oracle's Java releases
with Apache Lucene. When migrating to new hardware and installing Ubuntu
16.04.2, the tests failed with strange errors:
The system is Ubuntu 16.04.2 (64bits) with linux-image-4.8.0-53-generic. Java
7, Java 8 and Java 9 preview releases run without any problems if it is 64 bit
versions (downloaded from Oracle's homepage). We don't run OpenJDK from Ubuntu
package reporsitories, as we have many different combinations of JVMs running
tests (also inside VirtualBox).
If tests are using 32 bit JVM versions, the 32 bit compilation fails in
most cases. For 32 bit support we use Multiarch i386 packages and
installed libc6. This was same setup as Ubuntu 14.04 with Kernel 4.4.
Sometimes the compilation with Apache Ant works, but then it fails
horribly during running tests. The most often seen stack trace is:
jenkins@serv1:~/tools/java/32bit/jdk1.8.0_131/bin$ ./java -version
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) Server VM (build 25.131-b11, mixed mode)
> java.lang.NullPointerException
> at
> java.lang.ThreadLocal$ThreadLocalMap.getEntryAfterMiss(ThreadLocal.java:440)
> at java.lang.ThreadLocal$ThreadLocalMap.getEntry(ThreadLocal.java:419)
> at java.lang.ThreadLocal$ThreadLocalMap.access$000(ThreadLocal.java:298)
> at java.lang.ThreadLocal.get(ThreadLocal.java:163)
> at
> org.apache.tools.ant.property.LocalProperties.current(LocalProperties.java:70)
> at
> org.apache.tools.ant.property.LocalProperties.enterScope(LocalProperties.java:89)
jenkins@serv1:~/tools/java/32bit/jdk-9-ea+168/bin$ ./java -version
java version "9-ea"
Java(TM) SE Runtime Environment (build 9-ea+168)
Java HotSpot(TM) Server VM (build 9-ea+168, mixed mode)
> java.lang.NullPointerException
> at
> __randomizedtesting.SeedInfo.seed([716594A5FB7EBE0D:B81AAD979BE8FE98]:0)
> at
> java.base/java.lang.ThreadLocal$ThreadLocalMap.getEntryAfterMiss(ThreadLocal.java:442)
> at
> java.base/java.lang.ThreadLocal$ThreadLocalMap.getEntry(ThreadLocal.java:418)
> at
> java.base/java.lang.ThreadLocal$ThreadLocalMap.access$000(ThreadLocal.java:298)
> at java.base/java.lang.ThreadLocal.get(ThreadLocal.java:163)
> at
> org.apache.lucene.util.CloseableThreadLocal.get(CloseableThreadLocal.java:78)
> at
> org.apache.lucene.index.SegmentReader.getFieldsReader(SegmentReader.java:234)
I was not sure what exactly this is caused by and I found out: When
updating to the recent linux-hwe-edge kernel (4.10.0-21-generic
#23~16.04.1-Ubuntu) the problems are gone, it works as fine as in Ubuntu
14.04 with 4.4 kernel.
So it is not an libc issue or any other hardware-related problem. I
think it is caused by some wrongly backported patch. My first guess is
some 32bit fix for pthreads, I just don't find the bug report anymore
(launchpad search down).
To reproduce this, use the following approach:
- install Ubuntu 16.04.2 with HWE stack on 64 bit platform
- install the i386 multiarch and a basic libc run run 32 bit Java: apt-get
install libc6:i386 libncurses5:i386 libstdc++6:i386
- download a 32 bit package of Java 8u131 and untar it
- try to compile some larger Java program, e.g. Apache Lucene!
The workaround is currently to go back to 4.4.0 kernel or install the
edge HWE (kernel 4.10.0).
** Affects: lucene
Importance: Undecided
Assignee: Uwe Schindler (uwe-thetaphi)
Status: New
** Affects: openjdk
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: xenial
--
linux-image-4.8.0-53-generic on 64bit Ubuntu installations causes problems with
32bit Java (e.g., ThreadLocal problems)
https://bugs.launchpad.net/bugs/1693854
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