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https://issues.apache.org/jira/browse/HADOOP-5363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12689234#action_12689234
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zhiyong zhang commented on HADOOP-5363:
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That's a good suggestion.
Further, to make it more clear and readable in structure, I would think to make
ProxyForwardServlet only handle forwarding cases. Then make a new servlet
named ProxyFileServlet.java, which is parallel to ProxyListPathsServlet,
ProxyFileDataServlet, and ProxyStreamFile. ProxyFileServlet will handle /file
requests and internally it will make a single redirect request to
ProxyStreamFile. By doing that, we move the support to "/file" requests to each
proxy version (18, 20, 21, etc) instead of the forwarding part. Then the
forwarding functionality will be independent of each proxy versions and can be
deployed in a standalone fashion.
> Proxying for multiple HDFS clusters of different versions
> ---------------------------------------------------------
>
> Key: HADOOP-5363
> URL: https://issues.apache.org/jira/browse/HADOOP-5363
> Project: Hadoop Core
> Issue Type: New Feature
> Components: contrib/hdfsproxy
> Reporter: Kan Zhang
> Assignee: zhiyong zhang
> Attachments: HADOOP-5363.patch, HADOOP-5363.patch, HADOOP-5363.patch
>
>
> A single hdfsproxy server should be able to proxy for multiple HDFS clusters,
> whose Hadoop versions may be different from each other.
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