[HDFS-15197] [SBN read] Change ObserverRetryOnActiveException log to debug

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.3.0, 3.1.4, 3.2.2, 2.10.1
• Component/s: hdfs
• Hadoop Flags: Reviewed
• Assignee: Chen Liang
• Reporter: Chen Liang
• Created: 27/Feb/20 23:59
• Updated: 15/Mar/20 11:45
• Resolved: 15/Mar/20 11:26

Description

Currently in ObserverReadProxyProvider, when a ObserverRetryOnActiveException happens, ObserverReadProxyProvider logs a message at INFO level. This can be a large volume of logs in some scenarios. For example, when some job tries to access lots of files that haven't been accessed for a long time, all these accesses may trigger atime updates, which led to ObserverRetryOnActiveException. We should change this log to DEBUG.