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https://issues.apache.org/jira/browse/TOMEE-976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13682200#comment-13682200
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Henning Kristensen commented on TOMEE-976:
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Wow - what a swift response! Unfortunately, that didn't solve the problem -
still divides by 0.
Problem isn't that "permits" i 0, but that permits > 2 * class.length. Based on
my experimentation, this seems to fare better:
final int part = (int) Math.max(Math.round(classes.length * 1. /
permits), 1);
> Server startup fails on large, virtual Solaris servers with
> java.lang.ArithmeticException: / by zero
> ----------------------------------------------------------------------------------------------------
>
> Key: TOMEE-976
> URL: https://issues.apache.org/jira/browse/TOMEE-976
> Project: TomEE
> Issue Type: Bug
> Affects Versions: 1.5.2
> Environment: Virtual server in larger Solaris box - returns 236
> availableProcessors (Runtime.getRuntime().availableProcessors())
> Reporter: Henning Kristensen
>
> "part" gets rounded to 0 at line 189 in org.apache.tomee.catalina.Warmup.java
> when there's more than double the number of availableProcessors compared to
> the number of classes to preload. Subsequently the server doesn't start
> properly.
> I would think that "part" should be guarded against being 0.
> Here's the top of the startup log:
> Using CATALINA_BASE: /opt/apache-tomee-plus-1.5.2
> Using CATALINA_HOME: /opt/apache-tomee-plus-1.5.2
> Using CATALINA_TMPDIR: /opt/apache-tomee-plus-1.5.2/temp
> Using JRE_HOME: /opt/jdk1.6.0_43/jre
> Using CLASSPATH:
> /opt/apache-tomee-plus-1.5.2/bin/bootstrap.jar:/opt/apache-tomee-plus-1.5.2/bin/tomcat-juli.jar
> 13-06-2013 13:35:30 org.apache.catalina.core.AprLifecycleListener init
> INFO: The APR based Apache Tomcat Native library which allows optimal
> performance in production environments was not found on the
> java.library.path: /opt/jdk
> 1.6.0_43/jre/lib/sparc/server:/opt/jdk1.6.0_43/jre/lib/sparc:/opt/jdk1.6.0_43/jre/../lib/sparc:/usr/jdk/packages/lib/sparc:/lib:/usr/lib
> 13-06-2013 13:35:30 org.apache.coyote.AbstractProtocol init
> INFO: Initializing ProtocolHandler ["http-bio-8080"]
> 13-06-2013 13:35:30 org.apache.coyote.AbstractProtocol init
> INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
> Exception in thread "warmup - 1" Exception in thread "warmup - 2"
> java.lang.ArithmeticException: / by zero
> at org.apache.tomee.catalina.Warmup$2.run(Warmup.java:196)
> Exception in thread "warmup - 4" Exception in thread "warmup - 3"
> java.lang.ArithmeticException: / by zero
> at org.apache.tomee.catalina.Warmup$2.run(Warmup.java:196)
> java.lang.ArithmeticException: / by zero
> Exception in thread "warmup - 5" at
> org.apache.tomee.catalina.Warmup$2.run(Warmup.java:196)
> Exception in thread "warmup - 6" java.lang.ArithmeticException: / by zero
> at org.apache.tomee.catalina.Warmup$2.run(Warmup.java:196)
> ...
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