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https://issues.apache.org/jira/browse/HDFS-16503?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ayush Saxena resolved HDFS-16503.
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Fix Version/s: 3.4.0
Hadoop Flags: Reviewed
Resolution: Fixed
> Should verify whether the path name is valid in the WebHDFS
> -----------------------------------------------------------
>
> Key: HDFS-16503
> URL: https://issues.apache.org/jira/browse/HDFS-16503
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: tomscut
> Assignee: tomscut
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Attachments: image-2022-03-14-09-35-49-860.png
>
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> When creating a file using WebHDFS, there are two main steps:
> 1. Obtain the location of the Datanode to be written.
> 2. Put the file to this location.
> Currently *NameNodeRpcServer* verifies that pathName is valid, but
> *NamenodeWebHdfsMethods* and *RouterWebHdfsMethods* do not.
> So if we use an invalid path(such as duplicated slash), the first step
> returns success, but the second step throws an {*}InvalidPathException{*}.
> IMO, we should also do the validation in WebHdfs, which is consistent with
> the NameNodeRpcServer.
> !image-2022-03-14-09-35-49-860.png|width=548,height=164!
> The same webHDFS operations are: CREATE, APPEND, OPEN, GETFILECHECKSUM. So we
> can add DFSUtil.isValidName to redirectURI for *NamenodeWebHdfsMethods* and
> *RouterWebHdfsMethods.*
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