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Arpit Agarwal edited comment on HDFS-8880 at 8/7/15 11:37 PM: -------------------------------------------------------------- Patch to log NameNode metrics once every 10 minutes by default to a separate _name-metrics.log_ appender. Metrics logging can be turned off by setting {{dfs.namenode.metrics.logger.period.seconds}} to a non-positive value. The logging filters out {{TabularData}} and {{CompositeData}} metrics and also truncates string values at 128 bytes to avoid logging excessively. Updated patch with tests to follow soon. was (Author: arpitagarwal): Patch to log NameNode metrics once every 10 minutes by default to a separate _name-metrics.log_ appender. The logging filters out {{TabularData}} and {{CompositeData}} metrics and also truncates string values at 128 bytes to avoid logging excessively. Updated patch with tests to follow soon. > NameNode should periodically log metrics to separate appender > ------------------------------------------------------------- > > Key: HDFS-8880 > URL: https://issues.apache.org/jira/browse/HDFS-8880 > Project: Hadoop HDFS > Issue Type: Improvement > Components: namenode > Reporter: Arpit Agarwal > Assignee: Arpit Agarwal > Attachments: HDFS-8880.01.patch > > > The NameNode can periodically log metrics to help debugging when the cluster > is not setup with another metrics monitoring scheme. -- This message was sent by Atlassian JIRA (v6.3.4#6332)