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https://issues.apache.org/jira/browse/HDFS-13643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16496721#comment-16496721
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Daryn Sharp commented on HDFS-13643:
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It's a nice POC but not implementing security is a non-starter....
I think this can initially be done in a much simpler way that doesn't discard
any functionality (ex. security and service class is immediately evident, I'm
sure there's more) and doesn't create a divergent ipc client to maintain.
* Add an optional {{FutureTask}} to {{Client.Call}}.
* {{Call#setRpcResponse}} delegates to {{FutureTask#set}}
* {{Call#setException}} delegates to {{FutureTask#setException}}
* {{Client#getRpcResponse}} just invokes {{FutureTask#get}}.
* {{FutureTask#done}} method can be used for callbacks.
Or simpler yet, just make {{Client.Call}} extend {{FutureTask}} so the client
code doesn't have conditionals for whether the future is defined.
> Implement basic async rpc client
> --------------------------------
>
> Key: HDFS-13643
> URL: https://issues.apache.org/jira/browse/HDFS-13643
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ipc
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
> Attachments: HDFS-13643.patch
>
>
> Implement the basic async rpc client so we can start working on the DFSClient
> implementation ASAP.
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