SunHao created HDFS-15562:
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             Summary: StandbyCheckpointer will do checkpoint repeatedly while 
connecting observer/active namenode failed
                 Key: HDFS-15562
                 URL: https://issues.apache.org/jira/browse/HDFS-15562
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: SunHao


We find the standby namenode will do checkpoint over and over while connecting 
observer/active namenode failed.

StandbyCheckpointer won't update “lastCheckpointTime” when upload new fsimage 
to the other namenode failed, so that the standby namenode will keep doing 
checkpoint repeatedly.



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