tomscut created HDFS-16503:
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Summary: 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
Attachments: image-2022-03-14-09-35-49-860.png
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, the first step returns success, but the second
step throws an {*}InvalidPathException{*}. 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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