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https://issues.apache.org/jira/browse/HDFS-14568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16868357#comment-16868357
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Ayush Saxena commented on HDFS-14568:
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FYI. Once a file is created, Changing the storage policy afterwards doesn't
make the already written file follow the new Storage Policy,
Check Fsck for the file the blocks would still be in DISK, Wouldn't have moved
to SSD.
> The quota and consume of the file's ancestors are not handled when the
> storage policy of the file is changed.
> -------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-14568
> URL: https://issues.apache.org/jira/browse/HDFS-14568
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 3.1.0
> Reporter: Jinglun
> Assignee: Jinglun
> Priority: Major
> Attachments: HDFS-14568-001.patch, HDFS-14568-unit-test.patch
>
>
> The quota and consume of the file's ancestors are not handled when the
> storage policy of the file is changed. For example:
> 1. Set quota StorageType.SSD fileSpace-1 to the parent dir;
> 2. Create a file size of fileSpace with storage policy \{DISK,DISK,DISK}
> under it;
> 3. Change the storage policy of the file to ALLSSD_STORAGE_POLICY_NAME and
> expect a QuotaByStorageTypeExceededException.
> Because the quota and consume is not handled, the expected exception is not
> threw out.
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