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https://issues.apache.org/jira/browse/IMPALA-2112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16981991#comment-16981991
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ASF subversion and git services commented on IMPALA-2112:
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Commit 1f792bea4779229acbaaa40d4904df4546658bfb in impala's branch
refs/heads/master from Sahil Takiar
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=1f792be ]
IMPALA-9188: Composite primary keys should use same constraint name
After IMPALA-9104, dataload started failing when USE_CDP_HIVE=true
because of HIVE-16603 (Enforce foreign keys to refer to primary keys or
unique keys), which is in Hive 3 but not Hive 2.
This patch fixes a bug from IMPALA-2112 where Impala was generating a
unique constraint name for each column in a composite primary key,
rather than using the same constraint name for each column.
Testing:
* Ran dataload + core tests with USE_CDP_HIVE=[true/false]
Change-Id: I7a91658945b0355753c3cf05be195757b37edaf4
Reviewed-on: http://gerrit.cloudera.org:8080/14792
Reviewed-by: Sahil Takiar <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Support primary key/foreign key constraint as part of create table in Impala
> ----------------------------------------------------------------------------
>
> Key: IMPALA-2112
> URL: https://issues.apache.org/jira/browse/IMPALA-2112
> Project: IMPALA
> Issue Type: Sub-task
> Components: Catalog, Frontend
> Affects Versions: Impala 2.2
> Reporter: Marcel Kinard
> Assignee: Anurag Mantripragada
> Priority: Critical
> Labels: planner
>
> These would be advisory, ie, Impala would not attempt to enforce them.
> However, they could be used for cardinality estimation during query planning.
> To be compatible with Hive:
> * We neither enforce or validate integrity constraints. Hence, DISABLE and
> NOVALIDATE options are mandatory.
> * RELY/NORELY is optional. The CBO is expected to use this information when
> a user specifies “RELY”. The default is NORELY.
> * Since we do not yet have UNIQUE in Hive, the FK mentioned must be Primary
> Key column in parent table.
> Support create table syntax like hive does:
> * {{create table pk(id1 integer, id2 integer, }}{{primary key(id1, id2)
> DISABLE NOVALIDATE);}}
> * {{create table fk(id1 integer, id2 integer, }}{{constraint c1 foreign
> key(id1, id2) references pk(id2, id1) DISABLE NOVALIDATE);}}
> * {{create table T1(id integer, name string, primary key(id) DISABLE
> NOVALIDATE RELY}}
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