[
https://issues.apache.org/jira/browse/FLINK-19435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17203615#comment-17203615
]
Jark Wu commented on FLINK-19435:
---------------------------------
You mean {{Class.forName()}} is not thread safe?
> jdbc JDBCOutputFormat open function invoke Class.forName(drivername)
> --------------------------------------------------------------------
>
> Key: FLINK-19435
> URL: https://issues.apache.org/jira/browse/FLINK-19435
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / JDBC
> Affects Versions: 1.10.2
> Reporter: xiaodao
> Priority: Major
> Fix For: 1.10.3
>
>
> when we sink data to multi jdbc outputformat ,
> ```
> protected void establishConnection() throws SQLException,
> ClassNotFoundException {
> Class.forName(drivername);
> if (username == null) {
> connection = DriverManager.getConnection(dbURL);
> } else {
> connection = DriverManager.getConnection(dbURL, username, password);
> }
> }
> ```
> may cause jdbc driver deadlock. it need to change to synchronized function.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
