pin_zhang created SPARK-25804:
---------------------------------
Summary: JDOPersistenceManager leak when query via JDBC
Key: SPARK-25804
URL: https://issues.apache.org/jira/browse/SPARK-25804
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.3.1
Reporter: pin_zhang
1. start-thriftserver.sh under SPARK2.3.1
2. Create Table and insert values
create table test_leak (id string, index int);
insert into test_leak values('id1',1)
3. Create JDBC Client query the table
import java.sql.*;
public class HiveClient {
public static void main(String[] args) throws Exception {
String driverName = "org.apache.hive.jdbc.HiveDriver";
Class.forName(driverName);
Connection con = DriverManager.getConnection(
"jdbc:hive2://localhost:10000/default", "test", "test");
Statement stmt = con.createStatement();
String sql = "select * from test_leak";
int loop = 1000000;
while ( loop -- > 0) {
ResultSet rs = stmt.executeQuery(sql);
rs.next();
System.out.println(new java.sql.Timestamp(System.currentTimeMillis()) +" : " +
rs.getString(1));
rs.close();
}
con.close();
}
}
4. Dump HS2 heap org.datanucleus.api.jdo.JDOPersistenceManager instances keep
increasing.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
