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https://issues.apache.org/jira/browse/HDFS-17040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18074615#comment-18074615
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ASF GitHub Bot commented on HDFS-17040:
---------------------------------------
EvanLiu2000 commented on PR #5721:
URL: https://github.com/apache/hadoop/pull/5721#issuecomment-4275168486
Core-sites.xml :
<property>
<name>hadoop.http.filter.initializers</name>
<value>org.apache.hadoop.security.HttpCrossOriginFilterInitializer</value>
</property>
<property>
<name>hadoop.http.cross-origin.enabled</name>
<value>true</value>
</property>
<property>
<name>hadoop.http.cross-origin.allowed-origins</name>
<value>*</value>
</property>
<property>
<name>hadoop.http.cross-origin.allowed-methods</name>
<value>GET,POST,HEAD,PUT,OPTIONS,DELETE</value>
</property>
<property>
<name>hadoop.http.cross-origin.allowed-headers</name>
<value>Origin,Accept,Content-Type,content-type,X-Requested-With,Authorization</value>
</property>
<property>
<name>hadoop.http.cross-origin.max-age</name>
<value>1800</value>
</property>
My Folder Permissions：
liuye@debian:~/hadoop/hadoop-3.5.0$ hadoop fs -ls -R /
drwxr-xr-x - dr.who supergroup 0 2026-04-19 12:21 /ad
When I attempted to upload a file to the `/ad` directory via the NameNode
WebUI, an issue occurred:
Access to XMLHttpRequest at
'http://debian:9864/webhdfs/v1/ad/a.txt?op=CREATE&namenoderpcaddress=localhost:9000&createflag=&createparent=true&overwrite=false'
from origin 'http://127.0.0.1:9870' has been blocked by CORS policy: Request
header field content-type is not allowed by Access-Control-Allow-Headers in
preflight response.
May I ask how I should resolve this issue?
> Namenode web UI should set content type to application/octet-stream when
> uploading a file
> -----------------------------------------------------------------------------------------
>
> Key: HDFS-17040
> URL: https://issues.apache.org/jira/browse/HDFS-17040
> Project: Hadoop HDFS
> Issue Type: Task
> Components: ui
> Reporter: Attila Magyar
> Assignee: Attila Magyar
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.5.0
>
>
> When uploading a file using -WebHDFS- the Namenode web UI, it will set the
> content type to application/x-www-form-urlencoded, as this is the default
> used by jQuery
> https://github.com/apache/hadoop/blob/160b9fc3c9255024c00d487b7fcdf5ea59a42781/hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/hdfs/explorer.js#L516
> This causes knox to urlencode the request body so that uploading a CVS file
> 1,2,3 will result 1%2C2%2C3.
> Instead of application/x-www-form-urlencoded I think the encoding should be
> set to application/octet-stream.
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