Ngone51 commented on code in PR #45566:
URL: https://github.com/apache/spark/pull/45566#discussion_r1528687470
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core/src/test/scala/org/apache/spark/deploy/master/MasterSuiteBase.scala:
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@@ -49,7 +49,7 @@ object MockWorker {
class MockWorker(master: RpcEndpointRef, conf: SparkConf = new SparkConf)
extends RpcEndpoint {
val seq = MockWorker.counter.incrementAndGet()
val id = seq.toString
- override val rpcEnv: RpcEnv = RpcEnv.create("worker", "localhost", seq,
+ override val rpcEnv: RpcEnv = RpcEnv.create("worker", "localhost", 0,
Review Comment:
> just for my education, port 0 means using any available port?
Yes. This is from the JDK doc:
```
A port number of zero will let the system pick up an ephemeral port in a
bind operation.
```
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