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https://issues.apache.org/jira/browse/HDDS-5089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17322650#comment-17322650
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Mark Gui commented on HDDS-5089:
--------------------------------

Hi [~shashikant], I've pushed a patch handling this issue, could you help 
review it:)?

> On-demand disk checker for hdds volume
> --------------------------------------
>
>                 Key: HDDS-5089
>                 URL: https://issues.apache.org/jira/browse/HDDS-5089
>             Project: Apache Ozone
>          Issue Type: Sub-task
>            Reporter: Mark Gui
>            Assignee: Mark Gui
>            Priority: Major
>              Labels: pull-request-available
>
> Currently the MutableVolumeSet has a periodic disk checker which runs every 
> 15mins(fixed, not configurable), so it will be about serveral mins before 
> datanode get the chance to detect bad disks.
> As I found, datanode does not handle failure on the write path, we may have 
> to introduce on-demand disk checks when io failure is hit(due to bad disks, 
> etc).
> By the way, hdfs has only a lazy on-demand disk checker:
> [https://blog.cloudera.com/hdfs-datanode-scanners-and-disk-checker-explained/]



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