[HDFS-15118] [SBN Read] Slow clients when Observer reads are enabled but there are no Observers on the cluster.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.10.0
• Fix Version/s: 3.3.0, 3.1.4, 3.2.2, 2.10.1
• Component/s: hdfs-client
• Assignee: Chen Liang
• Reporter: Konstantin Shvachko
• Created: 13/Jan/20 20:06
• Updated: 23/Mar/20 18:19
• Resolved: 29/Jan/20 20:47

Description

We see substantial degradation in performance of HDFS clients, when Observer reads are enabled via ObserverReadProxyProvider, but there are no ObserverNodes on the cluster.