[HADOOP-16793] Remove WARN log when ipc connection interrupted in Client#handleSaslConnectionFailure()

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.3.0, 3.1.4, 3.2.2, 2.10.1
• Hadoop Flags: Reviewed
• Assignee: Lisheng Sun
• Reporter: Lisheng Sun
• Created: 08/Jan/20 02:15
• Updated: 21/Jan/20 21:33
• Resolved: 21/Jan/20 10:00

Description

log info:

// Some comments here
2020-01-07,15:01:17,816 WARN org.apache.hadoop.ipc.Client: Exception encountered while connecting to the server : java.io.InterruptedIOException: Interrupted while waiting for IO on channel java.nio.channels.SocketChannel[connected local=/10.75.13.227:50415 remote=mb2-hadoop-prc-ct06.awsind/10.75.15.99:11230]. 60000 millis timeout left

With RequestHedgingProxyProvider, one rpc call will send multiple requests to all namenodes. After one request return successfully,  all other requests will be interrupted. It's not a big problem and should not print a warning log.

private synchronized void handleSaslConnectionFailure(
....
LOG.warn("Exception encountered while connecting to "
        + "the server : " + ex);
}