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https://issues.apache.org/jira/browse/HDFS-7309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14192376#comment-14192376
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Colin Patrick McCabe commented on HDFS-7309:
--------------------------------------------
I'm not that familiar with commons-lang so I don't know if the two versions can
co-exist. Let's discuss this on HADOOP-10783, since there's already a
discussion of the upgrade there.
> XMLUtils.mangleXmlString doesn't seem to handle less than sign
> --------------------------------------------------------------
>
> Key: HDFS-7309
> URL: https://issues.apache.org/jira/browse/HDFS-7309
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.1.0-beta
> Reporter: Ravi Prakash
> Assignee: Colin Patrick McCabe
> Priority: Minor
> Fix For: 2.6.0
>
> Attachments: HDFS-7309.001.patch, HDFS-7309.002.patch, HDFS-7309.patch
>
>
> My expectation was that "<someElement>" + XMLUtils.mangleXmlString(
> "Containing<ALessThanSign") + "</someElement>" would be a string
> acceptable to a SAX parser. However this was not true.
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