Nothing
# nocov start
spark_worker_connect <- function(
sessionId,
backendPort = 8880,
config = list()) {
gatewayPort <- spark_config_value(config, "sparklyr.worker.gateway.port", backendPort)
gatewayAddress <- spark_config_value(config, "sparklyr.worker.gateway.address", "localhost")
config <- list()
worker_log("is connecting to backend using port ", gatewayPort)
gatewayInfo <- spark_connect_gateway(gatewayAddress,
gatewayPort,
sessionId,
config = config,
isStarting = TRUE
)
worker_log("is connected to backend")
worker_log("is connecting to backend session")
tryCatch(
{
interval <- spark_config_value(config, "sparklyr.backend.interval", 1)
backend <- socketConnection(
host = "localhost",
port = gatewayInfo$backendPort,
server = FALSE,
blocking = interval > 0,
open = "wb",
timeout = interval
)
class(backend) <- c(class(backend), "shell_backend")
},
error = function(err) {
close(gatewayInfo$gateway)
stop(
"Failed to open connection to backend:", err$message
)
}
)
worker_log("is connected to backend session")
sc <- structure(class = c("spark_worker_connection"), list(
# spark_connection
master = "",
method = "shell",
app_name = NULL,
config = NULL,
state = new.env(),
# spark_shell_connection
spark_home = NULL,
backend = backend,
gateway = gatewayInfo$gateway,
output_file = NULL
))
worker_log("created connection")
sc
}
# nocov end
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