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https://issues.apache.org/jira/browse/HIVE-18712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16372486#comment-16372486
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Alexander Kolbasov commented on HIVE-18712:
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I also think that we should consider semantics of the v2 API. For things like
createSomething, I think we should consider separating metadata only changes
from file system changes - e.g. currently createDatabase not only updates
metadata but also creates directory in the file system and there are some APIs
which can involve huge amount of file system ops (e.g. database/table renames),
especially on S3-type filesystems.
We should consider splitting APIs into metadata-specific and
filesystem-specific calls (and may be even move file-system specific calls
outside of metadata).
> Design HMS Api v2
> -----------------
>
> Key: HIVE-18712
> URL: https://issues.apache.org/jira/browse/HIVE-18712
> Project: Hive
> Issue Type: Improvement
> Components: Metastore
> Affects Versions: 3.0.0
> Reporter: Alexander Kolbasov
> Priority: Major
>
> This is an umbrella Jira covering the design of Hive Metastore API v2.
> It is supposed to be a placeholder for discussion and design documents.
>
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