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From Francis.Hu <francis...@reachjunction.com>
Subject org.apache.hadoop.ipc.StandbyException occurs at the thirty of per hour in standby NN
Date Fri, 24 Jan 2014 09:16:29 GMT
hello, All


Installed 2 NN and 3 DN in my hadoop-2.2.0 cluster,and implemented HDFS HA
with QJM. Currently, looking at the log of standby NN ,it throws below
exception at a regular interval, one hour:


2014-01-24 03:30:01,245 ERROR
org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException
as:ubuntu (auth:SIMPLE) cause:org.apache.hadoop.ipc.StandbyException:
Operation category READ is not supported in state standby


Actually, the active NN is working ,and no applications access HDFS with


Does anyone know what the problem is ?






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