wanglijie95 commented on a change in pull request #11499:
URL: https://github.com/apache/flink/pull/11499#discussion_r415331203
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File path:
flink-connectors/flink-jdbc/src/main/java/org/apache/flink/api/java/io/jdbc/JDBCLookupFunction.java
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@@ -139,6 +139,14 @@ public void eval(Object... keys) {
for (int retry = 1; retry <= maxRetryTimes; retry++) {
try {
+ try {
Review comment:
Check whether connection is valid on each writes is expensive. How about
catching the "statement closed" exception (mentioned in FLINK-16681) and
solving it by creating a new connection in the catch code block.
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