Github user squito commented on a diff in the pull request: https://github.com/apache/spark/pull/6205#discussion_r33798162 --- Diff: core/src/test/scala/org/apache/spark/rpc/RpcEnvSuite.scala --- @@ -539,6 +544,97 @@ abstract class RpcEnvSuite extends SparkFunSuite with BeforeAndAfterAll { } } + test("construct RpcTimeout with conf property") { + val conf = new SparkConf + + val testProp = "spark.ask.test.timeout" + val testDurationSeconds = 30 + val secondaryProp = "spark.ask.secondary.timeout" + + conf.set(testProp, s"${testDurationSeconds}s") + conf.set(secondaryProp, "100s") + + // Construct RpcTimeout with a single property + val rt1 = RpcTimeout(conf, testProp) + assert( testDurationSeconds === rt1.duration.toSeconds ) + + // Construct RpcTimeout with prioritized list of properties + val rt2 = RpcTimeout(conf, Seq("spark.ask.invalid.timeout", testProp, secondaryProp), "1s") + assert( testDurationSeconds === rt2.duration.toSeconds ) + + // Construct RpcTimeout with default value, + val defaultProp = "spark.ask.default.timeout" + val defaultDurationSeconds = 1 + val rt3 = RpcTimeout(conf, Seq(defaultProp), defaultDurationSeconds.toString + "s") + assert( defaultDurationSeconds === rt3.duration.toSeconds ) + assert( rt3.timeoutProp.contains(defaultProp) ) + + // Try to construct RpcTimeout with an unconfigured property + intercept[NoSuchElementException] { + RpcTimeout(conf, "spark.ask.invalid.timeout") + } + } + + test("ask a message timeout on Future using RpcTimeout") { + case class SleepyReply(msg: String) + + val rpcEndpointRef = env.setupEndpoint("ask-future", new RpcEndpoint { + override val rpcEnv = env + + override def receiveAndReply(context: RpcCallContext): PartialFunction[Any, Unit] = { + case msg: String => { + context.reply(msg) + } + case sr: SleepyReply => { + Thread.sleep(50) --- End diff -- +1, great idea. maybe is it also worth adding one more check that `SleepyReply` does make it through after you release the latch? Or if that isn't necessary, couldn't we just change `SleepyReply` to `NeverReply`, which never sends anything back and we don't even need the latch.
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