shining created HIVE-18278:
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Summary: Error in acquiring locks: java.lang.RuntimeException:
java.sql.SQLException: Unable to open a test connection to the given database.
Key: HIVE-18278
URL: https://issues.apache.org/jira/browse/HIVE-18278
Project: Hive
Issue Type: Bug
Components: Metastore
Affects Versions: 2.3.0
Environment: Hive:2.3.0
MetaStore DB : postgresql
Reporter: shining
Launch a hive cli client, it will be build 4 connections on postgresql, when
hive cli is openned 20 or more, the postgresql connections will be
Exhausted(default 100 connections). Then execute the command will be error:
{noformat}
hive> show tables;
FAILED: Error in acquiring locks: java.lang.RuntimeException:
java.sql.SQLException: Unable to open a test connection to the given database.
JDBC url = jdbc:postgresql://101.12.4.1:5432/hive, username = hive. Terminating
connection pool (set lazyInit to true if you expect to start your database
after your app). Original Exception: ------
org.postgresql.util.PSQLException: FATAL: remaining connection slots are
reserved for non-replication superuser connections
{noformat}
I also test in hive 1.1, When open a new hive cli, the connection number of
pgsql doesnot increase. Why the hive2.3 occupy 4 connection? Anyone else know
this?
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