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https://issues.apache.org/jira/browse/HADOOP-10315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14727167#comment-14727167
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Steve Loughran commented on HADOOP-10315:
-----------------------------------------
Assuming this is just moving to {{log.warn(text,e)}},
do you want to supply a patch for this?
> Log the original exception when getGroups() fail in UGI.
> --------------------------------------------------------
>
> Key: HADOOP-10315
> URL: https://issues.apache.org/jira/browse/HADOOP-10315
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 0.23.10, 2.2.0
> Reporter: Kihwal Lee
>
> In UserGroupInformation, getGroupNames() swallows the original exception.
> There have been many occasions that more information on the original
> exception could have helped.
> {code}
> public synchronized String[] getGroupNames() {
> ensureInitialized();
> try {
> List<String> result = groups.getGroups(getShortUserName());
> return result.toArray(new String[result.size()]);
> } catch (IOException ie) {
> LOG.warn("No groups available for user " + getShortUserName());
> return new String[0];
> }
> }
> {code}
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