Github user felixcheung commented on a diff in the pull request: https://github.com/apache/spark/pull/18320#discussion_r123681647 --- Diff: R/pkg/inst/worker/daemon.R --- @@ -30,8 +30,40 @@ port <- as.integer(Sys.getenv("SPARKR_WORKER_PORT")) inputCon <- socketConnection( port = port, open = "rb", blocking = TRUE, timeout = connectionTimeout) +# Waits indefinitely for a socket connecion by default. +selectTimeout <- NULL + while (TRUE) { - ready <- socketSelect(list(inputCon)) + ready <- socketSelect(list(inputCon), timeout = selectTimeout) --- End diff -- right, but in the odd case that JVM died before making the socket connection, this R process will wait forever?
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