HA: log a warning when a failover is first attempted
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Key: HADOOP-8041
URL: https://issues.apache.org/jira/browse/HADOOP-8041
Project: Hadoop Common
Issue Type: Sub-task
Components: ha
Affects Versions: HA Branch (HDFS-1623)
Reporter: Eli Collins
Currently we always warn for each client operation made to a NN we've failed
over to:
{noformat}
hadoop-0.24.0-SNAPSHOT $ ./bin/hdfs dfs -lsr /
12/02/08 17:43:04 WARN retry.RetryInvocationHandler: Exception while invoking
getFileInfo of class
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB after 0
fail over attempts. Trying to fail over immediately.
{noformat}
I'm going to remove this warning in HDFS-2918 since we shouldn't warn every
time a client performs an operation, eg could be weeks after the failover. But
we should eg log a warning eg the client first does a failover.
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