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Posted to dev@lucene.apache.org by "Uwe Schindler (JIRA)" <ji...@apache.org> on 2014/08/19 20:57:30 UTC
[jira] [Comment Edited] (SOLR-6387) Solr specific work around for
JDK bug #8047340: posix_spawn error with turkish locale
[ https://issues.apache.org/jira/browse/SOLR-6387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14102638#comment-14102638 ]
Uwe Schindler edited comment on SOLR-6387 at 8/19/14 6:57 PM:
--------------------------------------------------------------
The problem is not completely fixed:
On the first time, this correctly prints the warning, but as the Error occurs in the static initializer of UNIXProcess, the class cannot be loaded. Later references to this class then lead to NoClassDefFoundError. So we should catch both errors and log them.
See http://jenkins.thetaphi.de/job/Lucene-Solr-trunk-MacOSX/1777/:
{noformat}
[junit4] 2> 2082174 T4935 oasha.SystemInfoHandler.execute WARN Error forking command due to JVM locale bug (see https://issues.apache.org/jira/browse/SOLR-6387): posix_spawn is not a supported process launch mechanism on this platform.
[junit4] 2> 2082176 T4935 oas.SolrTestCaseJ4.tearDown ###Ending testOverriddenHandlers
[junit4] 2> NOTE: reproduce with: ant test -Dtestcase=InfoHandlerTest -Dtests.method=testOverriddenHandlers -Dtests.seed=9F30A6DF04D6D3E8 -Dtests.slow=true -Dtests.locale=tr -Dtests.timezone=America/Danmarkshavn -Dtests.file.encoding=UTF-8
[junit4] ERROR 0.10s | InfoHandlerTest.testOverriddenHandlers <<<
[junit4] > Throwable #1: java.lang.NoClassDefFoundError: Could not initialize class java.lang.UNIXProcess
[junit4] > at __randomizedtesting.SeedInfo.seed([9F30A6DF04D6D3E8:796BAAF8FD9F1C5C]:0){noformat}
was (Author: thetaphi):
The problem is not completely fixed:
On the first time, this correctly prints the warning, but as the Error occurs in the static initializer of UNIXProcess, the class cannot be loaded. Later references to this class then lead to NoClassDefFoundError. So we should catch both errors and log them.
> Solr specific work around for JDK bug #8047340: posix_spawn error with turkish locale
> -------------------------------------------------------------------------------------
>
> Key: SOLR-6387
> URL: https://issues.apache.org/jira/browse/SOLR-6387
> Project: Solr
> Issue Type: Bug
> Environment: Linux, MacOSX, POSIX in general
> Reporter: Hoss Man
> Assignee: Uwe Schindler
> Priority: Minor
> Labels: Java7, Java8
> Fix For: 5.0, 4.10
>
> Attachments: SOLR-6387.patch, SOLR-6387.patch
>
>
> Various versions of the Sun/Oracle/OpenJDK JVM have issues executing new processes if the default langauge of the JVM is "Turkish".
> The root bug reports of this affecting Runtime.exec() are here...
> * https://bugs.openjdk.java.net/browse/JDK-8047340
> * https://bugs.openjdk.java.net/browse/JDK-8055301
> On systems runining the affected JVMs, with a default langauge of "Turkish", this problem has historically manifested itself in Solr in a few ways:
> * SystemInfoHandler would throw nasty exceptions on these systems due to an attempt at conditionally executing some native process to check system stats
> * RunExecutableListener would fail cryptically
> * some solr tests involving either the SystemInfoHandler or the Hadoop MapReduce code would fail if the test framework randomly selected a turkish language based locale.
> Starting with Solr 4.10, We have worked around this jvm bug in Solr in 3 ways:
> * RunExecutableListener makes it more clear in the logs why it can't be used
> * SystemInfoHandler traps and ignores any Error related to "posix_span" in the same way it traps and ignores other errors related to it's conditional attempts at exec'ing (ie: permission problems, executable not found ,etc...)
> * our map reduce based tests that depend on exec'ing external processes now skip themselves automatically if a turkish local is randomly selected.
> Users affected by this issue who, for whatever reasons, can not upgrade to Solr 4.10, may wish to consider setting the "jdk.lang.Process.launchMechanism" system property explicitly (see below)
> {panel:title=original issue report}
> Jenkin's tests occasionally fail with the following cryptic error...
> {noformat}
> java.lang.Error: posix_spawn is not a supported process launch mechanism on this platform.
> at __randomizedtesting.SeedInfo.seed([9219CAA3BCAA7365:7F07719937A772E1]:0)
> at java.lang.UNIXProcess$1.run(UNIXProcess.java:104)
> at java.lang.UNIXProcess$1.run(UNIXProcess.java:93)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.lang.UNIXProcess.<clinit>(UNIXProcess.java:91)
> at java.lang.ProcessImpl.start(ProcessImpl.java:130)
> at java.lang.ProcessBuilder.start(ProcessBuilder.java:1028)
> at java.lang.Runtime.exec(Runtime.java:617)
> {noformat}
> A commonality of most of these failures is that the turkish locale has been randomly selected, and apparently the Runtime.exec is busted whtn you use turkish...
> http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8047340
> http://java.thedizzyheights.com/2014/07/java-error-posix_spawn-is-not-a-supported-process-launch-mechanism-on-this-platform-when-trying-to-spawn-a-process/
> We should consider hardcoding the "jdk.lang.Process.launchMechanism" sys property mentioned as a workarround in the jdk bug report
> {panel}
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