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https://issues.apache.org/jira/browse/HADOOP-18074?focusedWorklogId=789733&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-789733
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ASF GitHub Bot logged work on HADOOP-18074:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 11/Jul/22 20:34
Start Date: 11/Jul/22 20:34
Worklog Time Spent: 10m
Work Description: lmccay commented on PR #4550:
URL: https://github.com/apache/hadoop/pull/4550#issuecomment-1180842595
+1 provided by @steveloughran via https://github.com/apache/hadoop/pull/4503
- waiting on yetus greenlight here...
Issue Time Tracking
-------------------
Worklog Id: (was: 789733)
Time Spent: 1h 40m (was: 1.5h)
> Partial/Incomplete groups list can be returned in LDAP groups lookup
> --------------------------------------------------------------------
>
> Key: HADOOP-18074
> URL: https://issues.apache.org/jira/browse/HADOOP-18074
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Reporter: Philippe Lanoe
> Assignee: Larry McCay
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> Hello,
> The
> {code:java}
> Set<String> doGetGroups(String user, int goUpHierarchy) {code}
> method in
> [https://github.com/apache/hadoop/blob/b27732c69b114f24358992a5a4d170bc94e2ceaf/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/LdapGroupsMapping.java#L476]
> Looks like having an issue if in the middle of the loop a *NamingException*
> is caught:
> The groups variable is not reset in the catch clause and therefore the
> fallback lookup cannot be executed (when goUpHierarchy==0 at least):
> ||
> {code:java}
> if (groups.isEmpty() || goUpHierarchy > 0) {
> groups = lookupGroup(result, c, goUpHierarchy);
> }
> {code}
>
> Consequence is that only a partial list of groups is returned, which is not
> correct.
> Following options could be used as solution:
> * Reset the group to an empty list in the catch clause, to trigger the
> fallback query.
> * Add an option flag to enable ignoring groups with Naming Exception (since
> they are not groups most probably)
> Independently, would any issue also occur (and therefore full list cannot be
> returned) in the first lookup as well as in the fallback query, the method
> should/could(with option flag) throw an Exception, because in some scenario
> accuracy is important.
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