Daryn Sharp created HDFS-7213:
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Summary: processIncrementalBlockReport performance degradation
Key: HDFS-7213
URL: https://issues.apache.org/jira/browse/HDFS-7213
Project: Hadoop HDFS
Issue Type: Bug
Components: namenode
Affects Versions: 2.4.0
Reporter: Daryn Sharp
Assignee: Eric Payne
Priority: Critical
{{BlockManager#processIncrementalBlockReport}} has a debug line that is missing
a {{isDebugEnabled}} check. The write lock is being held. Coupled with the
increase in incremental block reports from receiving blocks, under heavy load
this log line noticeably degrades performance.
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