That thread looks like the connection between the Spark process and jvisualvm. It's expected to show high up when doing sampling if the app is not doing much else.
On Fri, Jun 23, 2017 at 10:46 AM, Reth RM <reth.ik...@gmail.com> wrote: > Running a spark job on local machine and profiler results indicate that > highest time spent in sun.rmi.transport.tcp.TCPTransport$ConnectionHandler. > Screenshot of profiler result can be seen here : https://jpst.it/10i-V > > Spark job(program) is performing IO (sc.wholeTextFile method of spark apis), > Reads files from local file system and analyses the text to obtain tokens. > > Any thoughts and suggestions? > > Thanks. > -- Marcelo --------------------------------------------------------------------- To unsubscribe e-mail: user-unsubscr...@spark.apache.org
