Xiaoyu Yao created HDFS-10475:
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Summary: Adding metrics and warn/debug logs for long FSD lock
Key: HDFS-10475
URL: https://issues.apache.org/jira/browse/HDFS-10475
Project: Hadoop HDFS
Issue Type: Improvement
Components: namenode
Reporter: Xiaoyu Yao
Assignee: Xiaoyu Yao
This is a follow up of the comment on HADOOP-12916 and
[here|https://issues.apache.org/jira/browse/HDFS-9924?focusedCommentId=15310837&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15310837]
add more metrics and WARN/DEBUG logs for long FSD/FSN locking operations on
namenode similar to what we have for slow write/network WARN/metrics on
datanode.
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