[jira] [Commented] (ARTEMIS-732) Spurious message while loading native libraries in certain envs.

["Jim Gomes (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARTEMIS-732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15496516#comment-15496516 ] 

Jim Gomes commented on ARTEMIS-732:
-----------------------------------

Yes, changing the script so the 32-bit libraries don't get loaded into the 64-bit runtime makes this error message go away.

> Spurious message while loading native libraries in certain envs.
> ----------------------------------------------------------------
>
>                 Key: ARTEMIS-732
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-732
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 1.4.0
>         Environment: Debian Linux 64-bit (Stretch), OpenJDK 1.8.0.102
>            Reporter: Jim Gomes
>            Priority: Blocker
>              Labels: easyfix
>             Fix For: 1.5.0
>
>         Attachments: artemis, artemis64
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> Some systems will throw the following message when loading the wrong bit alignment:
> {noformat}
> OpenJDK 64-Bit Server VM warning: You have loaded library
> /home/username/apache-artemis-1.4.0/bin/lib/linux-i686/libartemis-native-32.so
> which might have disabled stack guard. The VM will try to fix the stack guard now.
> It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'
> {noformat}
> The problem is with the {{exec}} command-line, specifically the {{-Djava.library.path}} parameter. It combines both the 32-bit library path and the 64-bit library path, but it doesn't actually work.  The script should deal with it accordingly to only have the proper  32-bit or 64-bit. All that is necessary is to modify the library path to be platform specific, and the error condition is resolved. I have attached modified script files (*{{artemis}}* and *{{artemis64}}*) that can be used depending on the run-time environment. Here are the key differences between the two scripts:
> {code:title=32-bit version}
> exec "$JAVACMD" $JAVA_ARGS $ARTEMIS_CLUSTER_PROPS \
>     -classpath "$CLASSPATH" \
>     -Dartemis.home="$ARTEMIS_HOME" \
>     -Djava.library.path="$ARTEMIS_HOME/bin/lib/linux-i686" \
>     $DEBUG_ARGS \
>     org.apache.activemq.artemis.boot.Artemis "$@"}}
> {code}
> {code:title=64-bit version}
> exec "$JAVACMD" $JAVA_ARGS $ARTEMIS_CLUSTER_PROPS \
>     -classpath "$CLASSPATH" \
>     -Dartemis.home="$ARTEMIS_HOME" \
>     -Djava.library.path="$ARTEMIS_HOME/bin/lib/linux-x86_64" \
>     $DEBUG_ARGS \
>     org.apache.activemq.artemis.boot.Artemis "$@"
> {code}



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