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Apache Spark commented on SPARK-15395:
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User 'zsxwing' has created a pull request for this issue:
https://github.com/apache/spark/pull/13196
> Use getHostString to create RpcAddress
> --------------------------------------
>
> Key: SPARK-15395
> URL: https://issues.apache.org/jira/browse/SPARK-15395
> Project: Spark
> Issue Type: Bug
> Affects Versions: 1.6.0, 1.6.1
> Reporter: Shixiong Zhu
> Assignee: Shixiong Zhu
> Fix For: 2.0.0
>
>
> Right now the netty RPC uses `InetSocketAddress.getHostName` to create `RpcAddress` for
network events. If we use an IP address to connect, then the RpcAddress's host will be a host
name (if the reverse lookup successes) instead of the IP address. However, some places need
to compare the original IP address and the RpcAddress in `onDisconnect` (e.g., CoarseGrainedExecutorBackend),
and this behavior will make the check incorrect.
> The correct way is using `getHostString`.
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