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https://issues.apache.org/jira/browse/HDFS-7467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14266871#comment-14266871
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Benoy Antony commented on HDFS-7467:
------------------------------------
1.
{quote}
Are all storage policies in fallback storage equivalent to other storage
policies that this output can always be fully described by the percentages that
Tsz has suggested?
{quote}
There is a possibility that some storage tier combination may not belong to a
storage policy.
My recommendation is to display the policy along with the combination if
possible. If not, display the combination. Lowercase for policy name is
intentional.
{code}
Storage Policy # of blocks % of blocks
cold (DISK:1,ARCHIVE:2) 340730 97.7393%
frozen (ARCHIVE:3) 3928 1.1268%
DISK:2,ARCHIVE:2 3122 0.8956%
warm (DISK:2,ARCHIVE:1) 748 0.2146%
DISK:1,ARCHIVE:3 44 0.0126%
DISK:3,ARCHIVE:2 30 0.0086%
DISK:3,ARCHIVE:1 9 0.0026%
{code}
2.
{quote}
There should also be some warning messages as well in fsck for all files that
are unable to meet the requested ideal for their storage policy and are using
fallback storage, perhaps with a switch since that could become overly volumous
output.
{quote}
This is a nice feature. Will look into that .
> Provide storage tier information for a directory via fsck
> ---------------------------------------------------------
>
> Key: HDFS-7467
> URL: https://issues.apache.org/jira/browse/HDFS-7467
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: balancer & mover
> Affects Versions: 2.6.0
> Reporter: Benoy Antony
> Assignee: Benoy Antony
> Attachments: HDFS-7467.patch
>
>
> Currently _fsck_ provides information regarding blocks for a directory.
> It should be augmented to provide storage tier information (optionally).
> The sample report could be as follows :
> {code}
> Storage Tier Combination # of blocks % of blocks
> DISK:1,ARCHIVE:2 340730 97.7393%
>
> ARCHIVE:3 3928 1.1268%
>
> DISK:2,ARCHIVE:2 3122 0.8956%
>
> DISK:2,ARCHIVE:1 748 0.2146%
>
> DISK:1,ARCHIVE:3 44 0.0126%
>
> DISK:3,ARCHIVE:2 30 0.0086%
>
> DISK:3,ARCHIVE:1 9 0.0026%
> {code}
>
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