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https://issues.apache.org/jira/browse/HADOOP-14475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16040018#comment-16040018
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Yonger commented on HADOOP-14475:
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In my case, i just run DFSIO with 20 map/reduce tasks in a 4-nodes cluster. And
i enable debug log to console, if you grep by "Metrics system initialized" the
attached log file, you will find the s3a file system has been initialized
multiple times under one bucket(s3a://test-bucket).
> Metrics of S3A don't print out when enable it in Hadoop metrics property file
> ------------------------------------------------------------------------------
>
> Key: HADOOP-14475
> URL: https://issues.apache.org/jira/browse/HADOOP-14475
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs/s3
> Affects Versions: 2.8.0
> Environment: uname -a
> Linux client01 4.4.0-74-generic #95-Ubuntu SMP Wed Apr 12 09:50:34 UTC 2017
> x86_64 x86_64 x86_64 GNU/Linux
> cat /etc/issue
> Ubuntu 16.04.2 LTS \n \l
> Reporter: Yonger
> Attachments: s3a-metrics.patch1, stdout.zip
>
>
> *.sink.file.class=org.apache.hadoop.metrics2.sink.FileSink
> #*.sink.file.class=org.apache.hadoop.metrics2.sink.influxdb.InfluxdbSink
> #*.sink.influxdb.url=http:/xxxxxxxxxx
> #*.sink.influxdb.influxdb_port=8086
> #*.sink.influxdb.database=hadoop
> #*.sink.influxdb.influxdb_username=hadoop
> #*.sink.influxdb.influxdb_password=hadoop
> #*.sink.ingluxdb.cluster=c1
> *.period=10
> #namenode.sink.influxdb.class=org.apache.hadoop.metrics2.sink.influxdb.InfluxdbSink
> #S3AFileSystem.sink.influxdb.class=org.apache.hadoop.metrics2.sink.influxdb.InfluxdbSink
> S3AFileSystem.sink.file.filename=s3afilesystem-metrics.out
> I can't find the out put file even i run a MR job which should be used s3.
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