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https://issues.apache.org/jira/browse/HIVE-19416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16496815#comment-16496815
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Steve Yeom edited comment on HIVE-19416 at 6/1/18 1:06 AM:
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1. MetaStore Schema Changes for the patch 04 of HIVE-19417
1.1 New table UPD_TXNS
A record is created per transaction write per table.
UPDATE_ID: primary key column, generated by Datanucleus when
specified at "package.jdo" as datastore-identity .
TBL_ID: TBLS.TBL_ID referencing column. A foreign key is created for
this column referencing TBLS.TBL_ID.
STATE: this is deleted for the next patch version.
TXN_ID: Transaction id of the transaction to insert the row.
WRITEID_LIST: valid writeIdList for the table of the transaction
1.2 Modification for TBLS and PARTITIONS tables
A new column TXN_ID: transaction id of the UPD_TXNS.
was (Author: steveyeom2017):
1. MetaStore Schema Changes for the patch 04 of HIVE-19147
1.1 New table UPD_TXNS
A record is created per transaction write per table.
UPDATE_ID: primary key column, generated by Datanucleus when
specified at "package.jdo" as datastore-identity .
TBL_ID: TBLS.TBL_ID referencing column. A foreign key is created for
this column referencing TBLS.TBL_ID.
STATE: this is deleted for the next patch version.
TXN_ID: Transaction id of the transaction to insert the row.
WRITEID_LIST: valid writeIdList for the table of the transaction
1.2 Modification for TBLS and PARTITIONS tables
A new column TXN_ID: transaction id of the UPD_TXNS.
> Create single version transactional table metastore statistics for
> aggregation queries
> --------------------------------------------------------------------------------------
>
> Key: HIVE-19416
> URL: https://issues.apache.org/jira/browse/HIVE-19416
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Reporter: Steve Yeom
> Assignee: Steve Yeom
> Priority: Major
>
> The system should use only statistics for aggregation queries like count on
> transactional tables.
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