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Posted to common-dev@hadoop.apache.org by "Erik Krogen (JIRA)" <ji...@apache.org> on 2018/09/06 18:44:00 UTC

[jira] [Created] (HADOOP-15726) Create utility to limit frequency of log statements

Erik Krogen created HADOOP-15726:
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             Summary: Create utility to limit frequency of log statements
                 Key: HADOOP-15726
                 URL: https://issues.apache.org/jira/browse/HADOOP-15726
             Project: Hadoop Common
          Issue Type: Improvement
          Components: common, util
            Reporter: Erik Krogen
            Assignee: Erik Krogen


There is a common pattern of logging a behavior that is normally extraneous. Under some circumstances, such a behavior becomes common, flooding the logs and making it difficult to see what else is going on in the system. Under such situations it is beneficial to limit how frequently the extraneous behavior is logged, while capturing some summary information about the suppressed log statements.

This is currently implemented in {{FSNamesystemLock}} (in HDFS-10713). We have additional use cases for this in HDFS-13791, so this is a good time to create a common utility for different sites to share this logic.



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