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From "Yang Yun (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-15207) VolumeScanner skip to scan blocks accessed during recent scan peroid
Date Sun, 17 May 2020 00:52:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-15207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yang Yun updated HDFS-15207:
----------------------------
    Status: Open  (was: Patch Available)

> VolumeScanner skip to scan blocks accessed during recent scan peroid
> --------------------------------------------------------------------
>
>                 Key: HDFS-15207
>                 URL: https://issues.apache.org/jira/browse/HDFS-15207
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>            Reporter: Yang Yun
>            Assignee: Yang Yun
>            Priority: Minor
>         Attachments: HDFS-15207.002.patch, HDFS-15207.003.patch, HDFS-15207.004.patch,
HDFS-15207.005.patch, HDFS-15207.006.patch, HDFS-15207.007.patch, HDFS-15207.patch, HDFS-15207.patch
>
>
> Check the access time of block file to avoid scanning recently changed blocks, reducing
disk IO.



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