HA: Client failover policy is incorrectly trying to fail over all IOExceptions
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Key: HADOOP-7928
URL: https://issues.apache.org/jira/browse/HADOOP-7928
Project: Hadoop Common
Issue Type: Sub-task
Components: ha, ipc
Affects Versions: HA Branch (HDFS-1623)
Reporter: Todd Lipcon
Assignee: Aaron T. Myers
Priority: Blocker
In the {{FailoverOnNetworkExceptionRetry}} implementation, we're returning
FAILOVER_AND_RETRY for any IOException, so long as the call is idempotent. So,
for example, {{getFileInfo}} on a file you don't have access to throws
AccessControlException which incorrectly triggers a failover. We should not
failover on RemoteExceptions unless they are StandbyException.
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