You are viewing a plain text version of this content. The canonical link for it is here.

Posted to hdfs-issues@hadoop.apache.org by "JiangHua Zhu (Jira)" <ji...@apache.org> on 2021/12/16 09:06:00 UTC

[jira] [Updated] (HDFS-16386) Reduce DataNode load when FsDatasetAsyncDiskService is working

     [ https://issues.apache.org/jira/browse/HDFS-16386?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

JiangHua Zhu updated HDFS-16386:
--------------------------------
    Attachment: monitor.png

> Reduce DataNode load when FsDatasetAsyncDiskService is working
> --------------------------------------------------------------
>
>                 Key: HDFS-16386
>                 URL: https://issues.apache.org/jira/browse/HDFS-16386
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 2.9.2
>            Reporter: JiangHua Zhu
>            Assignee: JiangHua Zhu
>            Priority: Major
>         Attachments: monitor.png
>
>
> Our DataNode node has 36 disks. When FsDatasetAsyncDiskService is working, it will cause a high load on the DataNode.
> Here are some monitoring related to memory:
> Since each disk deletes the block asynchronously, and each thread allows 4 threads to work,
> This will cause some troubles to the DataNode, such as increased cpu and increased memory.
> We should appropriately reduce the number of jobs of the total thread so that the DataNode can work better.



--
This message was sent by Atlassian Jira
(v8.20.1#820001)

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org