Shixiong Zhu created SPARK-15395:
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Summary: Use getHostString to create RpcAddress
Key: SPARK-15395
URL: https://issues.apache.org/jira/browse/SPARK-15395
Project: Spark
Issue Type: Bug
Affects Versions: 1.6.1, 1.6.0, 2.0.0
Reporter: Shixiong Zhu
Assignee: Shixiong Zhu
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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