Liang Xie created HDFS-6110:
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Summary: adding more slow action log in critical write path
Key: HDFS-6110
URL: https://issues.apache.org/jira/browse/HDFS-6110
Project: Hadoop HDFS
Issue Type: Improvement
Components: datanode
Affects Versions: 2.3.0, 3.0.0
Reporter: Liang Xie
Assignee: Liang Xie
After digging a HBase write spike issue caused by slow buffer io in our
cluster, just realize we'd better to add more abnormal latency warning log in
write flow, such that if other guys hit HLog sync spike, we could know more
detail info from HDFS side at the same time.
Patch will be uploaded soon.
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