Harsh J created HADOOP-9322:
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Summary: LdapGroupsMapping doesn't seem to set a timeout for its
directory search
Key: HADOOP-9322
URL: https://issues.apache.org/jira/browse/HADOOP-9322
Project: Hadoop Common
Issue Type: Improvement
Components: security
Affects Versions: 2.0.3-alpha
Reporter: Harsh J
Priority: Minor
We don't appear to be setting a timeout via
http://docs.oracle.com/javase/6/docs/api/javax/naming/directory/SearchControls.html#setTimeLimit(int)
before we search with
http://docs.oracle.com/javase/6/docs/api/javax/naming/directory/DirContext.html#search(javax.naming.Name,%20java.lang.String,%20javax.naming.directory.SearchControls).
This may occasionally lead to some unwanted NN pauses due to lock-holding on
the operations that do group lookups. A timeout is better to define than rely
on "0" (infinite wait).
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