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https://issues.apache.org/jira/browse/HDDS-5447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17392820#comment-17392820
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Marton Elek commented on HDDS-5447:
-----------------------------------
Thanks the answers [~pifta]. I am also very interested about the design doc and
the motivation here.
Originally, Ozone had a specific REST service and Ozone client was able to
connect to OM via RPC OR REST protocol. The REST protocol was removed in
multiple steps (like HDDS-738 or HDDS-2172) after S3 gateway is implemented to
simplify the project maintenance and to keep only one REST endpoint.
This issue seems to propose to create a second REST interface, again. Would be
great to understand the motivation better....
> HttpFS support in Ozone
> -----------------------
>
> Key: HDDS-5447
> URL: https://issues.apache.org/jira/browse/HDDS-5447
> Project: Apache Ozone
> Issue Type: New Feature
> Components: Ozone Client, Ozone Manager
> Reporter: Aravindan Vijayan
> Assignee: István Fajth
> Priority: Major
>
> There are several tools out there mainly written in Python, that uses the
> webhdfs interface to connect to HDFS. Even there are quite a few other
> filesystem implementations that provide access via the same rest interface
> that HDFS provides.
> HUE also implements the HDFS file browser by accessing HDFS via the REST API
> either on the NameNodes or on HTTPFS Server instances added to the HDFS
> service.
> This gave the inspiration to check and experiment what is required to support
> a similar REST endpoint over Ozone.
> The advantage is that we can ease the migration of tools developed in-house
> that are using this interface of HDFS, while we can add the possibility to
> browse Ozone from HUE.
> There is literally no disadvantage of having such an interface, as we can
> implement it as a separate module which does not have any interference with
> the rest of the code, as the REST endpoint as with HTTPFS will use a regular
> Java based Ozone client to serve any requests.
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