[SPARK-19432] Fix an unexpected failure when connecting timeout

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.2, 2.1.0
• Fix Version/s: 2.1.1, 2.2.0
• Component/s: Spark Core
• Assignee: Shixiong Zhu
• Reporter: Shixiong Zhu
• Created: 01/Feb/17 23:55
• Updated: 02/Feb/17 05:40
• Resolved: 02/Feb/17 05:40

Description

When connecting timeout, `ask` may fail with a confusing message:

17/02/01 23:15:19 INFO Worker: Connecting to master ...
java.lang.IllegalArgumentException: requirement failed: TransportClient has not yet been set.
        at scala.Predef$.require(Predef.scala:224)
        at org.apache.spark.rpc.netty.RpcOutboxMessage.onTimeout(Outbox.scala:70)
        at org.apache.spark.rpc.netty.NettyRpcEnv$$anonfun$ask$1.applyOrElse(NettyRpcEnv.scala:232)
        at org.apache.spark.rpc.netty.NettyRpcEnv$$anonfun$ask$1.applyOrElse(NettyRpcEnv.scala:231)
        at scala.concurrent.Future$$anonfun$onFailure$1.apply(Future.scala:138)
        at scala.concurrent.Future$$anonfun$onFailure$1.apply(Future.scala:136)
        at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32)

Issue Links

• links to: [Github] Pull Request #16773 (zsxwing)