Hello.I test creating same table in two threads.Here is my test code:
public class ConcurrentCreateTable {
private static Connection conn;
private static Connection conn1;
public static void main(String[] args) throws Exception {
initialize();
new Thread(new Runnable() {
@Override
public void run() {
while (true) {
try (Statement stmt = conn.createStatement()) {
stmt.execute(
"CREATE TABLE IF NOT EXISTS city1(ID
INTEGER,NAME VARCHAR ,PRIMARY KEY(ID)) WITH \"template=replicated\";");
stmt.execute("DROP TABLE IF EXISTS city1");
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}).start();
new Thread(new Runnable() {
@Override
public void run() {
while (true) {
try (Statement stmt = conn1.createStatement()) {
stmt.execute(
"CREATE TABLE IF NOT EXISTS city1(ID
INTEGER,NAME VARCHAR ,PRIMARY KEY(ID)) WITH \"template=replicated\";");
stmt.execute("DROP TABLE IF EXISTS city1");
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}).start();
while(true) {
}
}
private static void initialize() throws Exception {
Class.forName(Config.IGNITE_DRIVER);
final Properties props = new Properties();
conn = DriverManager.getConnection(Config.IGNITE_URL, props);
conn1 = DriverManager.getConnection(Config.IGNITE_URL, props);
}
}
It throws table already exists error.Does ignite not allow to cocurrently
create tables?
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