cloud-fan commented on code in PR #50587:
URL: https://github.com/apache/spark/pull/50587#discussion_r2050506132
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core/src/main/scala/org/apache/spark/api/python/PythonRDD.scala:
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@@ -717,35 +718,50 @@ class BytesToString extends
org.apache.spark.api.java.function.Function[Array[By
* collects a list of pickled strings that we pass to Python through a socket.
*/
private[spark] class PythonAccumulatorV2(
- @transient private val serverHost: String,
- private val serverPort: Int,
- private val secretToken: String)
+ @transient private val serverHost: Option[String],
+ private val serverPort: Option[Int],
+ private val secretToken: Option[String],
+ @transient private val socketPath: Option[String])
extends CollectionAccumulator[Array[Byte]] with Logging {
- Utils.checkHost(serverHost)
+ // Unix domain socket
+ def this(socketPath: String) = this(None, None, None, Some(socketPath))
+ // TPC socket
+ def this(serverHost: String, serverPort: Int, secretToken: String) = this(
+ Some(serverHost), Some(serverPort), Some(secretToken), None)
+
+ serverHost.foreach(Utils.checkHost)
val bufferSize = SparkEnv.get.conf.get(BUFFER_SIZE)
+ val isUnixDomainSock =
SparkEnv.get.conf.get(PYTHON_UNIX_DOMAIN_SOCKET_ENABLED)
/**
* We try to reuse a single Socket to transfer accumulator updates, as they
are all added
* by the DAGScheduler's single-threaded RpcEndpoint anyway.
*/
- @transient private var socket: Socket = _
+ @transient private var socket: SocketChannel = _
- private def openSocket(): Socket = synchronized {
- if (socket == null || socket.isClosed) {
- socket = new Socket(serverHost, serverPort)
- logInfo(log"Connected to AccumulatorServer at host: ${MDC(HOST,
serverHost)}" +
- log" port: ${MDC(PORT, serverPort)}")
+ private def openSocket(): SocketChannel = synchronized {
+ if (socket == null || !socket.isOpen) {
+ if (isUnixDomainSock) {
+ socket = SocketChannel.open(UnixDomainSocketAddress.of(socketPath.get))
+ logInfo(log"Connected to AccumulatorServer at socket:
${MDC(SOCKET_ADDRESS, serverHost)}")
+ } else {
+ socket = SocketChannel.open(new InetSocketAddress(serverHost.get,
serverPort.get))
+ logInfo(log"Connected to AccumulatorServer at host: ${MDC(HOST,
serverHost)}" +
+ log" port: ${MDC(PORT, serverPort)}")
Review Comment:
serverPort.get
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