internal JvmBridge(int portNumber)
{
if (portNumber == 0)
{
throw new Exception("Port number is not set.");
}
_portNumber = portNumber;
_logger.LogInfo($"JvMBridge port is {portNumber}");
_jvmThreadPoolGC = new JvmThreadPoolGC(
_logger, this, SparkEnvironment.ConfigurationService.JvmThreadGCInterval, _processId);
_isRunningRepl = SparkEnvironment.ConfigurationService.IsRunningRepl();
int numBackendThreads = SparkEnvironment.ConfigurationService.GetNumBackendThreads();
int maxNumSockets = numBackendThreads;
if (numBackendThreads >= (2 * SocketBufferThreshold))
{
// Set the max number of concurrent sockets to be less than the number of
// JVM backend threads to allow some buffer.
maxNumSockets -= SocketBufferThreshold;
}
_logger.LogInfo($"The number of JVM backend thread is set to {numBackendThreads}. " +
$"The max number of concurrent sockets in JvmBridge is set to {maxNumSockets}.");
_socketSemaphore = new SemaphoreSlim(maxNumSockets, maxNumSockets);
}