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I set up a hbase/hadoop cluster on ec2 using Apache Whirr but when I ssh into the namenode (hbase master) and run $JAVA_HOME/bin/jps all I see running is jps, no mention of hbase or namenode. They are running, however, because I was able to work with both of them. Any explanation for this?

Philip O'Brien
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1 Answers1

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jps displays java processes for the current user, and sometimes only sessions it can resolve to the current user (so doesn't always work as expected).

Try a ps axww | grep java instead, that should list the java executables running, with full command line arguments

Chris White
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  • Right again Chris. The output obviously isn't as clean as with jps but at least it serves as a sanity check to see the various components running! Thanks – Philip O'Brien Apr 19 '13 at 16:00