Is there a reliable way to change spark.r.backendConnectionTimeout in 0.10.0? I've tried setting it to infinity or 6000000 in the spark interpreter config and after interpreter restart I still get this message after a day when I execute an R cell: `sparkR backend is dead, please try to increase spark.r.backendConnectionTimeout`
R version: $ R --version R version 3.4.4 (2018-03-15) -- "Someone to Lean On" Copyright (C) 2018 The R Foundation for Statistical Computing Platform: x86_64-pc-linux-gnu (64-bit) Previous log lines to the WARN: zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:00,585] ({SchedulerFactory5} VFSNotebookRepo.java[save]:144) - Saving note 2GPAQ28TJ to R Test_2GPAQ28TJ.zpln zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:00,587] ({SchedulerFactory5} AbstractScheduler.java[runJob]:154) - Job paragraph_1639695005043_382078932 finished by scheduler RemoteInterpreter-r-shared_process-shared_session with status ERROR zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,641] ({Thread-13} ZeppelinServer.java[lambda$shutdown$0]:316) - Shutting down Zeppelin Server ... zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,647] ({qtp1219402581-14} NotebookServer.java[onClose]:474) - Closed connection to 127.0.0.1:36372 (1006) Disconnected zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,648] ({Thread-13} AbstractConnector.java[doStop]:381) - Stopped ServerConnector@3270d194{HTTP/1.1, (http/1.1)}{127.0.0.1:8080} zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,648] ({Thread-13} HouseKeeper.java[stopScavenging]:158) - node0 Stopped scavenging zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,665] ({Thread-13} ContextHandler.java[doStop]:1099) - Stopped o.e.j.w.WebAppContext@7ae42ce3{zeppelin-web-angular,/next,null,UNAVAILABLE}{/home/ubuntu/zeppelin-0.10.0-bin-all/zeppelin-web-angular-0.10.0.war} zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,674] ({Thread-13} ContextHandler.java[doStop]:1099) - Stopped o.e.j.w.WebAppContext@9ebe38b{zeppelin-web,/,null,UNAVAILABLE}{/home/ubuntu/zeppelin-0.10.0-bin-all/zeppelin-web-0.10.0.war} zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,678] ({ignite-close} InterpreterSetting.java[close]:535) - Close InterpreterSetting: ignite zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,678] ({ignite-close} InterpreterSetting.java[close]:535) - Close InterpreterSetting: ignite zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,683] ({geode-close} InterpreterSetting.java[close]:535) - Close InterpreterSetting: geode zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,684] ({jdbc-close} InterpreterSetting.java[close]:535) - Close InterpreterSetting: jdbc zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,686] ({beam-close} InterpreterSetting.java[close]:535) - Close InterpreterSetting: beam zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,686] ({beam-close} InterpreterSetting.java[close]:535) - Close InterpreterSetting: beam zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,686] ({influxdb-close} InterpreterSetting.java[close]:535) - Close InterpreterSetting: influxdb zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,686] ({lens-close} InterpreterSetting.java[close]:535) - Close InterpreterSetting: lens zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,690] ({pig-close} InterpreterSetting.java[close]:535) - Close InterpreterSetting: pig zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,690] ({geode-close} InterpreterSetting.java[close]:535) - Close InterpreterSetting: geode zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,690] ({jdbc-close} InterpreterSetting.java[close]:535) - Close InterpreterSetting: jdbc zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log- INFO [2022-01-04 17:56:05,690] ({file-close} InterpreterSetting.java[close]:535) - Close InterpreterSetting: file -- zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log.2021-12-21- INFO [2021-12-21 01:21:18,597] ({qtp1219402581-14} NotebookService.java[runParagraph]:346) - Start to run paragraph: paragraph_1639695005043_382078932 of note: 2GPAQ28TJ zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log.2021-12-21- INFO [2021-12-21 01:21:18,598] ({qtp1219402581-14} VFSNotebookRepo.java[save]:144) - Saving note 2GPAQ28TJ to R Test_2GPAQ28TJ.zpln zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log.2021-12-21- INFO [2021-12-21 01:21:18,600] ({SchedulerFactory4} AbstractScheduler.java[runJob]:127) - Job paragraph_1639695005043_382078932 started by scheduler RemoteInterpreter-r-shared_process-shared_session zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log.2021-12-21- INFO [2021-12-21 01:21:18,601] ({SchedulerFactory4} Paragraph.java[jobRun]:416) - Run paragraph [paragraph_id: paragraph_1639695005043_382078932, interpreter: org.apache.zeppelin.r.RInterpreter, note_id: 2GPAQ28TJ, user: anonymous] zeppelin-0.10.0-bin-all/logs/zeppelin-ubuntu-ip-172-31-85-96.log.2021-12-21: WARN [2021-12-21 01:21:18,608] ({SchedulerFactory4} NotebookServer.java[onStatusChange]:1986) - Job paragraph_1639695005043_382078932 is finished, status: ERROR, exception: null, result: %text sparkR backend is dead, please try to increase spark.r.backendConnectionTimeout