Erik Krogen created HDFS-13791:
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Summary: Limit logging frequency of edit tail related statements
Key: HDFS-13791
URL: https://issues.apache.org/jira/browse/HDFS-13791
Project: Hadoop HDFS
Issue Type: Sub-task
Components: hdfs, qjm
Reporter: Erik Krogen
Assignee: Erik Krogen
There are a number of log statements that occur every time new edits are tailed
by a Standby NameNode. When edits are tailing only on the order of every tens
of seconds, this is fine. With the work in HDFS-13150, however, edits may be
tailed every few milliseconds, which can flood the logs with tailing-related
statements. We should throttle it to limit it to printing at most, say, once
per 5 seconds.
We can implement logic similar to that used in HDFS-10713. This may be slightly
more tricky since the log statements are distributed across a few classes.
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