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From "Hoss Man (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SOLR-6387) Solr specific work around for JDK bug #8047340: posix_spawn error with turkish locale
Date Thu, 22 Jan 2015 17:24:35 GMT

     [ https://issues.apache.org/jira/browse/SOLR-6387?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hoss Man updated SOLR-6387:
---------------------------
    Environment: 
Linux, MacOSX, POSIX in general
Running Oracle / OpenJDK prior to Java 8u40 and Java 7u80.

  was:Linux, MacOSX, POSIX in general


> 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
> Running Oracle / OpenJDK prior to Java 8u40 and Java 7u80.
>            Reporter: Hoss Man
>            Assignee: Uwe Schindler
>            Priority: Minor
>              Labels: Java7, Java8
>             Fix For: 4.10, Trunk
>
>         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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