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https://issues.apache.org/jira/browse/SPARK-23651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16395094#comment-16395094
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Apache Spark commented on SPARK-23651:
--------------------------------------

User '10110346' has created a pull request for this issue:
https://github.com/apache/spark/pull/20802

> Add a  check for host name
> --------------------------
>
>                 Key: SPARK-23651
>                 URL: https://issues.apache.org/jira/browse/SPARK-23651
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 2.4.0
>            Reporter: liuxian
>            Priority: Minor
>
> I encountered a error like this:
> _org.apache.spark.SparkException: Invalid Spark URL: 
> spark://HeartbeatReceiver@ci_164:42849_
>         _at 
> org.apache.spark.rpc.RpcEndpointAddress$.apply(RpcEndpointAddress.scala:66)_
>         _at 
> org.apache.spark.rpc.netty.NettyRpcEnv.asyncSetupEndpointRefByURI(NettyRpcEnv.scala:134)_
>         _at 
> org.apache.spark.rpc.RpcEnv.setupEndpointRefByURI(RpcEnv.scala:101)_
>         _at org.apache.spark.rpc.RpcEnv.setupEndpointRef(RpcEnv.scala:109)_
>         _at org.apache.spark.util.RpcUtils$.makeDriverRef(RpcUtils.scala:32)_
>         _at org.apache.spark.executor.Executor.<init>(Executor.scala:155)_
>         _at 
> org.apache.spark.scheduler.local.LocalEndpoint.<init>(LocalSchedulerBackend.scala:59)_
>         _at 
> org.apache.spark.scheduler.local.LocalSchedulerBackend.start(LocalSchedulerBackend.scala:126)_
>         _at 
> org.apache.spark.scheduler.TaskSchedulerImpl.start(TaskSchedulerImpl.scala:164)_
>  
> I didn't  know why this _URL_(spark://HeartbeatReceiver@ci_164:42849) is 
> invalid, so i think we should give a clearer reminder for this error.
>  



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