Alexander Behm created HIVE-5264:
------------------------------------
Summary: SQL generated by MetaStoreDirectSql.java not compliant
with Postgres.
Key: HIVE-5264
URL: https://issues.apache.org/jira/browse/HIVE-5264
Project: Hive
Issue Type: Bug
Components: Metastore
Affects Versions: 0.11.0
Environment: Ubuntu 12.04
PostgreSQL 9.1.8
Reporter: Alexander Behm
Some operations against the Hive Metastore seem broken
against Postgres.
For example, when using HiveMetastoreClient.listPartitions()
the Postgres logs show queries such as:
2013-09-09 19:10:01 PDT STATEMENT: select PARTITIONS.PART_ID from
PARTITIONS inner join TBLS on PARTITIONS.TBL_ID = TBLS.TBL_ID inner
join DBS on TBLS.DB_ID = DBS.DB_ID where TBLS.TBL_NAME = $1 and
DBS.NAME = $2 order by PART_NAME asc
with a somewhat cryptic (but correct) error:
ERROR: relation "partitions" does not exist at character 32
Postgres identifiers are somewhat unusual. Unquoted identifiers are interpreted
as lower case (there is no Postgres option to change this). Since the Metastore
table schema uses upper case table names, the correct SQL requires escaped
identifiers to those tables, i.e.,
select "PARTITIONS"."PART_ID" from "PARTITIONS"...
Hive sets metastore.try.direct.sql=true by default, so the above SQL is
generated by hive/metastore/MetaStoreDirectSql.java, i.e., this is not a
Datanucleus problem.
When I set metastore.try.direct.sql=false, then the Metastore backed by
Postgres works.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
