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https://issues.apache.org/jira/browse/HDFS-2316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13100120#comment-13100120
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Sanjay Radia commented on HDFS-2316:
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HDFS-2178 (HOOP) is HDFS Proxy using http protocol - a replacement for hdfs
proxy v2, but providing rw access. It runs as separate daemons *typically* on
an array of servers sitting next to an HDFS cluster (like HDFS proxy v2).
HDFS-2316 is http rw access that replaces hftp but is *built into* the hdfs
system and provides bandwidth
scaling by redirecting from the NN to the datanode that contains the block. It
will use spnego and delegation token. It does not requires a notion of trust.
HDFS-2178 (HOOP) is run as a separate daemons that are trusted by hdfs.
hdfs-2178 (HOOP) can provide additional features like bandwidth management and
user authentication mapping.
There is an overlap but a need for both.
> webhdfs: a complete FileSystem implementation for accessing HDFS over HTTP
> --------------------------------------------------------------------------
>
> Key: HDFS-2316
> URL: https://issues.apache.org/jira/browse/HDFS-2316
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
>
> We current have hftp for accessing HDFS over HTTP. However, hftp is a
> read-only FileSystem and does not provide "write" accesses.
> In HDFS-2284, we propose to have webhdfs for providing a complete FileSystem
> implementation for accessing HDFS over HTTP. The is the umbrella JIRA for
> the tasks.
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