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Wei-Chiu Chuang commented on HDFS-9956: --------------------------------------- That is implemented in HADOOP-9322, and you should be able to use it since Hadoop 2.1.0-beta, or if you're using CDH, >= CDH 4.3.0. > LDAP PERFORMANCE ISSUE AND FAIL OVER > ------------------------------------ > > Key: HDFS-9956 > URL: https://issues.apache.org/jira/browse/HDFS-9956 > Project: Hadoop HDFS > Issue Type: Bug > Reporter: sanjay kenganahalli vamanna > > The typical LDAP group name resolution works well under typical scenarios. > However, we have seen cases where a user is mapped to many groups (in an > extreme case, a user is mapped to more than 100 groups). The way it's being > implemented now makes this case super slow resolving groups from > ActiveDirectory and making the namenode to failover. > Instead of failover, we can use the > parameter(ha.zookeeper.session-timeout.ms) in the getgroups method to > time-out and send the failed response back to the user so that we can prevent > name node failover. -- This message was sent by Atlassian JIRA (v6.3.4#6332)