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https://issues.apache.org/jira/browse/HIVE-17733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16198365#comment-16198365
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Zoltan Haindrich commented on HIVE-17733:
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[~alangates] I guess metastoreutils is ok for now...I think we should try to
remove as much stuff from that class as possible later (last time I played with
metastore client separation; the metastoreutils ended up as a public api part)
- I think the most important is to avoid the appearance of HMSHandler in
classes which will be later part of the public api will be benefical.
I think probably later we should file some followups to remove undesired
options from the metastore ( which will cause trouble later like this one)
https://github.com/apache/hive/pull/258/files?w=1#diff-61434f2dd7a5fe334625e19ef2405ed3L592
I feel that statistics gathering is kinda out of scope for the metastore.
I've seen a possibly notable thing:
https://github.com/apache/hive/pull/258/files?w=1#diff-3d07754b1de8dc5a50a3395b7d6f9045L513
the old one permitted to pass all kind of settings to the persistence layer;
the new version adds an extra "filtering" on top of it; I think instead of
re-declaring all kind of jdo/jpa/xxx args in metastore's conf; we should
provide some generic way to pass props to the jpa implementation; I would like
to propose that we might pass a subtree of settings to the jpa implementation (
without the sub-tree prefix ) - although I'm not sure how often these
properties are being used by the enduser....
beyond this, everything looks good.
> Move RawStore to standalone metastore
> -------------------------------------
>
> Key: HIVE-17733
> URL: https://issues.apache.org/jira/browse/HIVE-17733
> Project: Hive
> Issue Type: Sub-task
> Components: Metastore
> Reporter: Alan Gates
> Assignee: Alan Gates
> Labels: pull-request-available
> Attachments: HIVE-17733.2.patch, HIVE-17733.patch
>
>
> This includes moving implementations of RawStore (like ObjectStore),
> MetastoreDirectSql, and stats related classes like ColumnStatsAggregator and
> the NDV classes.
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