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https://issues.apache.org/jira/browse/HDFS-17544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiaoqiao He resolved HDFS-17544.
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Fix Version/s: HDFS-17531
Hadoop Flags: Reviewed
Resolution: Fixed
> [ARR] The router client rpc protocol PB supports asynchrony.
> ------------------------------------------------------------
>
> Key: HDFS-17544
> URL: https://issues.apache.org/jira/browse/HDFS-17544
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: rbf
> Reporter: Jian Zhang
> Assignee: Jian Zhang
> Priority: Major
> Labels: pull-request-available
> Fix For: HDFS-17531
>
>
> *Describe*
> In order not to affect other modules, when implementing router asynchronous
> client rpc protocolPB, it mainly extends the original protocolPB; The
> implemented protocolPB is as follows:
> *RouterClientProtocolTranslatorPB* extends ClientNamenodeProtocolTranslatorPB
> *RouterGetUserMappingsProtocolTranslatorPB* extends
> GetUserMappingsProtocolClientSideTranslatorPB
> *RouterNamenodeProtocolTranslatorPB* extends NamenodeProtocolTranslatorPB
> *RouterRefreshUserMappingsProtocolTranslatorPB* extends
> RefreshUserMappingsProtocolClientSideTranslatorPB
> Then let the router's *ConnectionPool* use the aforementioned protocolPB
> In the implementation of asynchronous Rpc.client, the main methods used
> include HADOOP-13226, HDFS-10224, etc
> {*}AsyncRpcProtocolPBUtil{*}: Make the implementation of asynchronous rpc
> protocol more concise and clear.
>
> *Test*
> new UTs:
> 1.TestAsyncRpcProtocolPBUtil
> 2.TestRouterClientSideTranslatorPB
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