java - Save Spark Launcher-Output to File -


i'm submitting jobs spark-cluster (with yarn) programmatically java-app , spark launcher (starting job startapplication(), not launch()). have log-output, produced on stdout und stderr launcher when executing java app, in file, can access java-app. don't want change global spark-log-config, want dynamic solution, can control depending on changing variables java-app on every single execution.

following documentation should possible using child_process_logger_name option. defined java.util.logging.logger here , added code job-launcher:

sparklauncher.setconfig(sparklauncher.child_process_logger_name, "mylog"); 

but doesn't work, logfile empty. tried other methods setconf(...) or add addsparkarg(...), without success. did wrong? or should better use log4j, make custom configuration, , give in way launcher? if yes, how in java-app?

below code snippet have been using print sparklauncher logs slf4j-log4j:

private static final logger logger = loggerfactory.getlogger(jobsubmitter.class);  sparklauncher launcher = new sparklauncher()............;//prepare launcher  launcher.redirecttolog(jobsubmitter.class.getname());         sparkapphandle handler = launcher.startapplication();         while (handler.getstate() == null || !handler.getstate().isfinal()) {             if (handler.getstate() != null) {                 logger.info("job state :{} " , handler.getstate());                 if (handler.getappid() != null) {                     logger.info("app id: {} :: state:{}" , handler.getappid() , handler.getstate());                 }             } //pause job reduce job check frequency             thread.sleep(jobstatuscheckinterval ==0?default_job_status_check_interval:jobstatuscheckinterval);         } 

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