Hello,
I am trying to get profiles for a workload running on top of Hadoop 0.20.2 framework. The workload jars and Hadoop jars have been compiled with debug symbols enabled. I could see local variable tables and line number tables in the jar class files using javap. I am passing the right value for *agentpath * flag pointing to oprofile JVMTI agent and I am also seeing it passed correctly to map and reduce JVMs from *ps *output. This is done through conf/mapred-site.xml properties. However, in the profiles I am unable to see meaningful samples for JITed code; everything is getting attributed to anon samples. Profiling a test app works just fine with the same JVM that is being used by Hadoop. I can see the right debug symbols being attributed in the resulting profiling. In fact, I even tried profiling a JVM process that was spawned using *ProcessBuilder* API, the way Hadoop spawns its map and reduce JVMs, that seem to work fine too. Does anybody have any pointers as to what I might be missing here? Has anybody successfully collected profiles showing JIT debug symbols for any Hadoop workload? I am using OProfile 0.9.6. Thanks, -Shrinivas