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https://issues.apache.org/jira/browse/HDFS-1109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12860424#action_12860424
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Dmytro Molkov commented on HDFS-1109:
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This will also be server side only change. There are two servlets that get
affected by it the FileDataServlet and StreamFile, since you cannot run cluster
with namenode and datanode not synced on build version there is no breaking
compatibility.
> HFTP and URL Encoding
> ---------------------
>
> Key: HDFS-1109
> URL: https://issues.apache.org/jira/browse/HDFS-1109
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.20.1, 0.20.2, 0.20.3, 0.21.0, 0.22.0
> Reporter: Dmytro Molkov
> Assignee: Dmytro Molkov
>
> We just saw this error happen in our cluster. If there is a file that has a
> "+" sign in the name it is not readable through HFTP protocol.
> The problem is when we are reading a file with HFTP we are passing a name of
> the file as a parameter in request and + gets undecoded into space on the
> server side. So the datanode receiving the streamFile request tries to access
> a file with space instead of + in the name and doesn't find that file.
> The proposed solution is to pass the filename as a part of URL as with all
> the other HFTP commands, since this is the only place where it is not being
> treated this way. Are there any objections to this?
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