> Or are you saying that the Java process never even starts?
Exactly. Here's what I got back from jstack as expected: hadoop-user@yks-hadoop-m01:/usr/local/spark/bin$ jstack 31316 31316: Unable to open socket file: target process not responding or HotSpot VM not loaded The -F option can be used when the target process is not responding hadoop-user@yks-hadoop-m01:/usr/local/spark/bin$ jstack 31316 -F Attaching to core -F from executable 31316, please wait... Error attaching to core file: Can't attach to the core file
