I am trying to create a custom function in Stellar by following this guide. However, when I get following error when I call the function: [Stellar]>>> ?NOW [!] No docs available for function 'NOW' java.lang.IllegalArgumentException: No docs available for function 'NOW'         at org.apache.metron.stellar.common.shell.StellarResult.error(StellarResult.java:115)         at org.apache.metron.stellar.common.shell.specials.DocCommand.execute(DocCommand.java:71)         at org.apache.metron.stellar.common.shell.DefaultStellarShellExecutor.execute(DefaultStellarShellExecutor.java:252)         at org.apache.metron.stellar.common.shell.cli.StellarShell.execute(StellarShell.java:359)         at org.jboss.aesh.console.AeshProcess.run(AeshProcess.java:53)         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)         at java.lang.Thread.run(Thread.java:745) From the error messeage, it seems like it can't find the jar file I just created. I made sure that jar exists (in hdfs /apps/metron/stellar), the global.json ($METRON_HOME/config/zookeeper/global.json) is updated to point to this jar file and the finally the the config is pushed to zookeeper with $METRON_HOME/bin/zk_load_configs.sh. What could I be missing here? Please help. Thanks. ... View more