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https://issues.apache.org/jira/browse/HADOOP-7115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12985042#action_12985042
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Devaraj Das commented on HADOOP-7115:
-------------------------------------
It was the getpwuid calls leading to ldap outages in our major clusters (almost
twice every week). After implementing this cache, we didn't have a single
incident (and hopefully we will have none in the future too).
The version of nscd on our clusters proved to be really unreliable.
> Add a cache for getpwuid_r and getpwgid_r calls
> -----------------------------------------------
>
> Key: HADOOP-7115
> URL: https://issues.apache.org/jira/browse/HADOOP-7115
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 0.22.0
> Reporter: Arun C Murthy
> Assignee: Devaraj Das
>
> As discussed in HADOOP-6978, a cache helps a lot.
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