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https://issues.apache.org/jira/browse/HADOOP-11859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15735805#comment-15735805
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Kihwal Lee commented on HADOOP-11859:
-------------------------------------
cherry-pick to branch-2.7.
> PseudoAuthenticationHandler fails with httpcomponents v4.4
> ----------------------------------------------------------
>
> Key: HADOOP-11859
> URL: https://issues.apache.org/jira/browse/HADOOP-11859
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Fix For: 2.8.0, 2.7.4, 3.0.0-alpha1
>
> Attachments: HADOOP-11859.patch
>
>
> This shows in the context of WebHCat and Hive (which recently moved to
> httpcomponents:httpclient:4.4) but could happen in other places.
> URLEncodedUtils.parse(String, Charset) which is called from
> PseudoAuthenticationHandler.getUserName() with the 1st argument produced by
> HttpServletRequest.getQueryString().
> The later returns NULL if there is no query string in the URL.
> in httpcoponents:httpclient:4.2.5 parse() gracefully handles first argument
> being NULL, but in 4.4 it NPEs.
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