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Posted to hdfs-issues@hadoop.apache.org by "YaYun Wang (Jira)" <ji...@apache.org> on 2020/10/10 08:13:00 UTC
[jira] [Comment Edited] (HDFS-15025) Applying NVDIMM storage media
to HDFS
[ https://issues.apache.org/jira/browse/HDFS-15025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17211600#comment-17211600 ]
YaYun Wang edited comment on HDFS-15025 at 10/10/20, 8:12 AM:
--------------------------------------------------------------
[~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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