Ran Tao created CALCITE-5841:
--------------------------------
Summary: Improve the logic of creating JDBCMeta singleton in
calcite plus
Key: CALCITE-5841
URL: https://issues.apache.org/jira/browse/CALCITE-5841
Project: Calcite
Issue Type: Improvement
Components: extensions
Affects Versions: 1.34.0
Reporter: Ran Tao
Assignee: Ran Tao
current the logic of creating JdbcMeta singleton could be not safe in
multi-thread occasion.
we can add double-checking.
{code:java}
private static JdbcMeta getInstance() {
if (instance == null) {
try {
instance =
new JdbcMeta(CalciteConnectionProvider.DRIVER_URL,
CONNECTION_PROVIDER.provideConnectionInfo());
} catch (SQLException | IOException e) {
throw new RuntimeException(e);
}
}
return instance;
} {code}
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
