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Posted to hdfs-issues@hadoop.apache.org by "Ahmed Hussein (Jira)" <ji...@apache.org> on 2020/10/09 02:18:00 UTC

[jira] [Updated] (HDFS-15618) Improve datanode shutdown latency

     [ https://issues.apache.org/jira/browse/HDFS-15618?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ahmed Hussein updated HDFS-15618:
---------------------------------
    Attachment: HDFS-15618.001.patch

> Improve datanode shutdown latency
> ---------------------------------
>
>                 Key: HDFS-15618
>                 URL: https://issues.apache.org/jira/browse/HDFS-15618
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>            Reporter: Ahmed Hussein
>            Assignee: Ahmed Hussein
>            Priority: Major
>         Attachments: HDFS-15618.001.patch
>
>
> The shutdown of Datanode is a very long latency. A block scanner waits for 5 minutes to join on each VolumeScanner thread.
> Since the scanners are daemon threads and do not alter the block content, it is safe to ignore such conditions on shutdown of Datanode.



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