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https://issues.apache.org/jira/browse/HDFS-15548?focusedWorklogId=503431&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-503431
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ASF GitHub Bot logged work on HDFS-15548:
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Author: ASF GitHub Bot
Created on: 21/Oct/20 22:47
Start Date: 21/Oct/20 22:47
Worklog Time Spent: 10m
Work Description: Jing9 commented on pull request #2288:
URL: https://github.com/apache/hadoop/pull/2288#issuecomment-713921549
Thanks for working on this, Leon! The patch looks good to me in general.
Still have a couple of questions for discussion:
1. To add percentage and mount in FsVolumeImpl may not be very clear. How
about we add a new wrapper class for the group of volumes and indicating their
common mount and capacity distribution?
2. "reserved" is shared by the FsVolumeImpl instances on the same mount.
Thus we need to verify if the reserved space of the mount may be counted twice.
3. Later update of the DFS_DATANODE_RESERVE_FOR_ARCHIVE_PERCENTAGE
configuration may affect the capacity usage percentage calculation, although
this scenario is rare in practice.
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Issue Time Tracking
-------------------
Worklog Id: (was: 503431)
Time Spent: 6h (was: 5h 50m)
> Allow configuring DISK/ARCHIVE storage types on same device mount
> -----------------------------------------------------------------
>
> Key: HDFS-15548
> URL: https://issues.apache.org/jira/browse/HDFS-15548
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Reporter: Leon Gao
> Assignee: Leon Gao
> Priority: Major
> Labels: pull-request-available
> Time Spent: 6h
> Remaining Estimate: 0h
>
> We can allow configuring DISK/ARCHIVE storage types on the same device mount
> on two separate directories.
> Users should be able to configure the capacity for each. Also, the datanode
> usage report should report stats correctly.
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