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From "Lin Yiqun (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-9510) FsVolume should add the operation of creating file's time metrics
Date Sat, 05 Dec 2015 07:35:11 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9510?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Lin Yiqun updated HDFS-9510:
    Attachment: HDFS-9510.001.patch

I add the initial patch. I create a new metric class {{FsVolumeMetrics}} and this class will
be used for each FsVolumes. The metrics is operations of these:
* createTmpFile
* createRbwFile
* getTmpInputStreams
* createTmpFileTimeout
* createRbwFileTimeout
* getTmpInputStreamsTimeout

> FsVolume should add the operation of creating file's time metrics
> -----------------------------------------------------------------
>                 Key: HDFS-9510
>                 URL: https://issues.apache.org/jira/browse/HDFS-9510
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: benchmarks, fs
>    Affects Versions: 2.7.1
>            Reporter: Lin Yiqun
>            Assignee: Lin Yiqun
>         Attachments: HDFS-9510.001.patch
> For one datanode, this datanode may be have not only one data directorys. And each dataDir
has correspond to a FsVolums. And in some time, the one of these dataDirs being created files
or dirs slowly because of hardware problems. What's more, it will influence the whole node.
So we need to monitor these slow-writing disk.

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