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https://issues.apache.org/jira/browse/SPARK-15395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shixiong Zhu resolved SPARK-15395.
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Resolution: Fixed
Fix Version/s: 2.0.0
> 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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