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https://issues.apache.org/jira/browse/HDFS-15025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17211600#comment-17211600
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YaYun Wang edited comment on HDFS-15025 at 10/10/20, 8:12 AM:
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[~ayushtkn], [~liuml07] we read the relevant codes and test 
{{SetQuotaByStorageTypeOp}} by using {{hdfs dfsadmin -setSpaceQuota}}, and the 
result is that the function of setting quota by storage type will indeed be 
affected after upgrade, this is because the {{ordinal()}} of {{StorageType}} is 
stored when the quota of a directory is setted.

We hava updated the codes and comment at 
[https://github.com/apache/hadoop/pull/2377 
|https://github.com/apache/hadoop/pull/2377]please have a check.

 

 

 


was (Author: wangyayun):
[~ayushtkn], we read the relevant codes and test {{SetQuotaByStorageTypeOp}} by 
using {{hdfs dfsadmin -setSpaceQuota}}, and the result is that the function of 
setting quota by storage type will indeed be affected after upgrade, this is 
because the {{ordinal()}} of {{StorageType}} is stored when the quota of a 
directory is setted.

We hava updated the codes and comment at 
[https://github.com/apache/hadoop/pull/2377 
|https://github.com/apache/hadoop/pull/2377]please have a check.

 

 

 

> Applying NVDIMM storage media to HDFS
> -------------------------------------
>
>                 Key: HDFS-15025
>                 URL: https://issues.apache.org/jira/browse/HDFS-15025
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: datanode, hdfs
>            Reporter: YaYun Wang
>            Assignee: YaYun Wang
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.4.0
>
>         Attachments: Applying NVDIMM to HDFS.pdf, HDFS-15025.001.patch, 
> HDFS-15025.002.patch, HDFS-15025.003.patch, HDFS-15025.004.patch, 
> HDFS-15025.005.patch, HDFS-15025.006.patch, NVDIMM_patch(WIP).patch
>
>          Time Spent: 12h 10m
>  Remaining Estimate: 0h
>
> The non-volatile memory NVDIMM is faster than SSD, it can be used 
> simultaneously with RAM, DISK, SSD. The data of HDFS stored directly on 
> NVDIMM can not only improves the response rate of HDFS, but also ensure the 
> reliability of the data.



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