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https://issues.apache.org/jira/browse/HDFS-11371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15852129#comment-15852129
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Andrew Wang commented on HDFS-11371:
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LGTM +1 thanks Yiqun for working on this!
> Document missing metrics of erasure coding
> ------------------------------------------
>
> Key: HDFS-11371
> URL: https://issues.apache.org/jira/browse/HDFS-11371
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: documentation, erasure-coding
> Affects Versions: 3.0.0-alpha2
> Reporter: Yiqun Lin
> Assignee: Yiqun Lin
> Priority: Minor
> Attachments: HDFS-11371.001.patch
>
>
> HDFS-8411, HDFS-11216 add some metrics of erasure coding, but it hasn't been
> documented. The following metrics in {{DataNodeMetrics}} is missing in
> documentation.
> {code}
> @Metric("Count of erasure coding reconstruction tasks")
> MutableCounterLong ecReconstructionTasks;
> @Metric("Count of erasure coding failed reconstruction tasks")
> MutableCounterLong ecFailedReconstructionTasks;
> @Metric("Nanoseconds spent by decoding tasks")
> MutableCounterLong ecDecodingTimeNanos;
> @Metric("Bytes read by erasure coding worker")
> MutableCounterLong ecReconstructionBytesRead;
> @Metric("Bytes written by erasure coding worker")
> MutableCounterLong ecReconstructionBytesWritten;
> @Metric("Bytes remote read by erasure coding worker")
> MutableCounterLong ecReconstructionRemoteBytesRead;
> {code}
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