[GitHub] [incubator-druid] abhishekrb19 edited a comment on issue #7818: mkdir var/zk required, otherwise: Error: Could not find or load main class org.apache.zookeeper.server.quorum.QuorumPeerMain

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abhishekrb19 edited a comment on issue #7818: mkdir var/zk required, otherwise:   Error: Could not find or load main class org.apache.zookeeper.server.quorum.QuorumPeerMain
URL: https://github.com/apache/incubator-druid/issues/7818#issuecomment-522841947
 
 
   @adziri @erindru I had the same issue. The problem seems to be that the jars are not found in the class path. 
   
   From the script [run-zk](https://github.com/apache/incubator-druid/blob/druid-0.15.1-incubating-rc2/examples/bin/run-zk#L41), 
   
   ```
   exec java `cat "$CONFDIR"/jvm.config | xargs` \
     -cp "$WHEREAMI/../zk/lib/*:$WHEREAMI/../zk/*:$CONFDIR" \
     org.apache.zookeeper.server.quorum.QuorumPeerMain \
     "$CONFDIR"/zoo.cfg
   ```
   
   This would expand to something like depending on your environment:
   `incubator-druid/examples/bin/../zk/lib/`, so the libraries are expected to be in `incubator-druid/examples/zk`.
   
   But the documentation here is incorrect:
   
   > The startup scripts for the tutorial will expect the contents of the Zookeeper tarball to be located at zk under the apache-druid-0.15.1-incubating package root.
   
   Moving `zk` to examples/ fixes the issue for me.
   
   I think we could either:
   - update the documentation to reflect the correct directory for zk
   - change the run scripts to use the package root directory

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