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From "Hanisha Koneru (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11551) Handle SlowDiskReport from DataNode at the NameNode
Date Tue, 28 Mar 2017 00:53:41 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Hanisha Koneru updated HDFS-11551:
    Attachment: HDFS-11551.006.patch

Patch v06 uses a different approach for generating slow disk reports. A daemon runs every
30 mins (default, DFS_DATANODE_OUTLIERS_REPORT_INTERVAL_KEY) to generate the top N slow disks
from all the reports received from DataNodes. This daemon also cleans up the stale reports.

> Handle SlowDiskReport from DataNode at the NameNode
> ---------------------------------------------------
>                 Key: HDFS-11551
>                 URL: https://issues.apache.org/jira/browse/HDFS-11551
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs
>            Reporter: Hanisha Koneru
>            Assignee: Hanisha Koneru
>         Attachments: HDFS-11551.001.patch, HDFS-11551.002.patch, HDFS-11551.003.patch,
HDFS-11551.004.patch, HDFS-11551.005.patch, HDFS-11551.006.patch
> DataNodes send slow disk reports via heartbeats. Handle these reports at the NameNode
to find the topN slow disks.

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