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From "Mingliang Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14862) Metrics for AdlFileSystem
Date Tue, 12 Sep 2017 16:56:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16163282#comment-16163282

Mingliang Liu commented on HADOOP-14862:

Metrics2 was designed for Hadoop daemons so I don't like the AzureFS approach to collecting
metrics in that way. I like S3AFS with a good design of metrics, supporting FileSystemStorageStatistics
and handy instrumentation. Ping [~stevel@apache.org].

> Metrics for AdlFileSystem
> -------------------------
>                 Key: HADOOP-14862
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14862
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/adl
>    Affects Versions: 2.8.0
>            Reporter: John Zhuge
> Add a Metrics2 source {{AdlFileSystemInstrumentation}} for {{AdlFileSystem}}.
> Consider per-thread statistics data if possible. Atomic variables are not totally free
in multi-core arch. Don't think Java can do per-cpu data structure.

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