[jira] [Created] (HDFS-10896) Move lock logging logic from FSNamesystem into FSNamesystemLock

["Erik Krogen (JIRA)" <ji...@apache.org>]

Erik Krogen created HDFS-10896:
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             Summary: Move lock logging logic from FSNamesystem into FSNamesystemLock
                 Key: HDFS-10896
                 URL: https://issues.apache.org/jira/browse/HDFS-10896
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: namenode
            Reporter: Erik Krogen
            Assignee: Erik Krogen


There are a number of tickets (HDFS-10742, HDFS-10817, HDFS-10713, this subtask's story HDFS-10475) which are adding/improving logging/metrics around the {{FSNamesystemLock}}. All of this is done in {{FSNamesystem}} right now, which is polluting the namesystem with ThreadLocal variables, timing counters, etc. which are only relevant to the lock itself and the number of these increases as the logging/metrics become more sophisticated. It would be best to move these all into FSNamesystemLock to keep the metrics/logging tied directly to the item of interest. 



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