Setting the classpath

[David Montgomery]

Hi,

I am using druid on ubuntu 12.4.   Not being a java developer I dont know how to set a classpath.

I tried this.

 export CLASSPATH="/home/ubuntu/druid:."

Then read about what te -cp flag was but still but the below.

 

java -Duser.timezone=UTC -Dfile.encoding=UTF-8 -cp compute/:druid-services/target/druid-services-*-selfcontained.jar com.metamx.druid.http.ComputeMain
Exception in thread "main" java.lang.NoClassDefFoundError: com/metamx/druid/http/ComputeMain
Caused by: java.lang.ClassNotFoundException: com.metamx.druid.http.ComputeMain
    at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: com.metamx.druid.http.ComputeMain. Program will exit.

I did have a successful build using mvn package and I tried to run the above command in the top level druid directory.

Thanks

[Hagen Rother]

I noticed the linux jdk not liking a *, resolve it first. Here is mine (adjust pathes to your env):

CLASSPATH="/etc/druid:`/usr/bin/find /var/lib/druid/current/druid-services/target/*selfcontained.jar`"

[David Montgomery]

Thanks

I tried the below....same issue....

export CLASSPATH="`/usr/bin/find /home/ubuntu/druid/druid-services/target/*selfcontained.jar`"

echo $CLASSPATH
/home/ubuntu/druid/druid-services/target/druid-services-0.2.7-SNAPSHOT-selfcontained.jar

java -Duser.timezone=UTC -Dfile.encoding=UTF-8 -cp compute/:druid-services/target/druid-services-*-selfcontained.jar com.metamx.druid.http.ComputeMain
Exception in thread "main" java.lang.NoClassDefFoundError: com/metamx/druid/http/ComputeMain
Caused by: java.lang.ClassNotFoundException: com.metamx.druid.http.ComputeMain
    at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: com.metamx.druid.http.ComputeMain. Program will exit.

On Tue, Feb 12, 2013 at 9:32 PM, Hagen Rother <hagen....@madvertise.com> wrote:

I noticed the linux jdk not liking a *, resolve it first. Here is mine (adjust pathes to your env):

CLASSPATH="/etc/druid:`/usr/bin/find /var/lib/druid/current/druid-services/target/*selfcontained.jar`"

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[Hagen Rother]

I tried the below....same issue....

Try with fully qualified paths rather than relative ones

[David Montgomery]

everything is absolute now.  I installed openjdk-7 when I built.

root@ubuntu:/home/ubuntu# echo $CLASSPATH
/home/ubuntu/druid/druid-services/target/druid-services-0.2.7-SNAPSHOT-selfcontained.jar
root@ubuntu:/home/ubuntu# ls /home/ubuntu/druid/druid-services/target/druid-services-0.2.7-SNAPSHOT-selfcontained.jar
/home/ubuntu/druid/druid-services/target/druid-services-0.2.7-SNAPSHOT-selfcontained.jar
root@ubuntu:/home/ubuntu# export CLASSPATH='/home/ubuntu/druid/druid-services/target/druid-services-0.2.7-SNAPSHOT-selfcontained.jar'
root@ubuntu:/home/ubuntu# /usr/bin/java -Ddruid.realtime.specFile=/home/ubuntu/druid/runtime.properties  -Duser.timezone=UTC -Dfile.encoding=UTF-8 -cp compute/:druid-services/target/druid-services-0.2.7-SNAPSHOT-selfcontained.jar com.metamx.druid.http.ComputeMain

Exception in thread "main" java.lang.NoClassDefFoundError: com/metamx/druid/http/ComputeMain
Caused by: java.lang.ClassNotFoundException: com.metamx.druid.http.ComputeMain
    at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: com.metamx.druid.http.ComputeMain. Program will exit.

On Tue, Feb 12, 2013 at 10:14 PM, Hagen Rother <hagen....@madvertise.com> wrote:

I tried the below....same issue....

Try with fully qualified paths rather than relative ones

[Hagen Rother]

everything is absolute now.  I installed openjdk-7 when I built.

your classpath paths were and still are relative.

[David Montgomery]

Yes..I added an additional abs path in the command line.  It worked!  Well..I got another error but that is a config file error.

Thanks