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https://issues.apache.org/jira/browse/HDFS-2581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13154748#comment-13154748
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Suresh Srinivas commented on HDFS-2581:
---------------------------------------
Here is the approach for implementing for protobuf service:
Protobuf service generated code has BlockingInterface, which is expected to be
implemented by Server. However, the existing protocol interface has various
annotations (such as kerberos, idempotent etc.). The existing protocol
interfaces also have version information and protocol signature, from
VersionedProtocol interface. To support that:
# An interface that extends generated BlockingInteface and VersionedProtocol is
added.
# In this interface all required annotations and implementations of
VersionedProtocol methods are provided.
# Server implementation extends this interface.
# In a subsequent jira, which switches the RPC to use protobuf, the above
interface will be used as interface on the server side.
> Implement protobuf service for JournalProtocol
> ----------------------------------------------
>
> Key: HDFS-2581
> URL: https://issues.apache.org/jira/browse/HDFS-2581
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: name-node
> Reporter: Suresh Srinivas
> Assignee: Suresh Srinivas
> Fix For: 0.24.0
>
> Attachments: HDFS-2581.txt
>
>
> This jira adds implementation for JournalProtocol protobuf service along the
> same lines as HDFS-2181
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