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https://issues.apache.org/jira/browse/HADOOP-17467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17272406#comment-17272406
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Daryn Sharp commented on HADOOP-17467:
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I questioned the incompatible api change in HADOOP-17079 and resulting design
change that caused this bug. I suggested reverting the unnecessary providers
changes but not the entire change. If there's not disagreement perhaps it can
be done on this jira.
> netgroup-user is not added to Groups.cache
> ------------------------------------------
>
> Key: HADOOP-17467
> URL: https://issues.apache.org/jira/browse/HADOOP-17467
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 3.4.0
> Reporter: Ahmed Hussein
> Assignee: Ahmed Hussein
> Priority: Major
> Labels: pull-request-available
> Time Spent: 4.5h
> Remaining Estimate: 0h
>
> After the optimization in HADOOP-17079, both
> {{JniBasedUnixGroupsNetgroupMapping}} and
> {{ShellBasedUnixGroupsNetgroupMapping}} do not implement {{getGroupSet}}.
> As a result, {{Groups.load()}} load the cache calling {{fetchGroupSet}} which
> yield to the superclass {{JniBasedUnixGroupsMapping}} /
> {{ShellBasedUnixGroupsMapping}}.
> In other words, the groups mapping will never fetch from {{NetgroupCache}}.
> This alters the behavior of the implementation. Is there a reason to bypass
> loading. CC: [~xyao]
> This jira is to add missing implementation {{getGroupSet}} to
> {{JniBasedUnixGroupsNetgroupMapping}} and
> {{ShellBasedUnixGroupsNetgroupMapping}} .
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