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https://issues.apache.org/jira/browse/HADOOP-9565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15397523#comment-15397523
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Pieter Reuse commented on HADOOP-9565:
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Thanks for patch 006, Steve. Having Strings instead of bitmasks is definitely
an improvement. But maybe an enum is worth considering here.
I don't think the Put command adds functionality. An ObjectStore-object is
still a FileSystem-object, having the full FileSystem interface available. Or
am I missing something here?
Thank you for mentioning ViewFs here, Chris. It's important that this patch
doesn't break the great ease of use ViewFs brings. But considering ViewFs is
client-side only and this patch only brings performance enhancements, I don't
think it is worth the extra miles checking the config of ViewFs whether the
Path belongs to an ObjectStore which is part of a ViewFs instance.
> Add a Blobstore interface to add to blobstore FileSystems
> ---------------------------------------------------------
>
> Key: HADOOP-9565
> URL: https://issues.apache.org/jira/browse/HADOOP-9565
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs, fs/s3, fs/swift
> Affects Versions: 2.6.0
> Reporter: Steve Loughran
> Assignee: Pieter Reuse
> Attachments: HADOOP-9565-001.patch, HADOOP-9565-002.patch,
> HADOOP-9565-003.patch, HADOOP-9565-004.patch, HADOOP-9565-005.patch,
> HADOOP-9565-006.patch
>
>
> We can make the fact that some {{FileSystem}} implementations are really
> blobstores, with different atomicity and consistency guarantees, by adding a
> {{Blobstore}} interface to add to them.
> This could also be a place to add a {{Copy(Path,Path)}} method, assuming that
> all blobstores implement at server-side copy operation as a substitute for
> rename.
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