Github user fpompermaier commented on a diff in the pull request:
https://github.com/apache/flink/pull/1885#discussion_r59851873
--- Diff:
flink-batch-connectors/flink-jdbc/src/main/java/org/apache/flink/api/java/io/jdbc/JDBCInputFormat.java
---
@@ -119,7 +118,11 @@ private boolean isSplitConfigured() {
return splitColumnName != null;
}
+ /** Perform initialization of the JDBC connection. Done just once per
parallel task */
private void establishConnection() throws SQLException,
ClassNotFoundException {
+ if(dbConn!=null){
--- End diff --
It wa just to keep the connection establishing logic in a single method..no
problem for me to move the check in the open method
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