[jira] [Created] (FLINK-13789) Transactional Id Generation fails due to user code impacting formatting string

[Shang Yuanchun (Jira)]

Hao Dang created FLINK-13789:
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             Summary: Transactional Id Generation fails due to user code impacting formatting string
                 Key: FLINK-13789
                 URL: https://issues.apache.org/jira/browse/FLINK-13789
             Project: Flink
          Issue Type: Bug
            Reporter: Hao Dang


In [TransactionalIdsGenerator.java|[https://github.com/apache/flink/blob/master/flink-connectors/flink-connector-kafka/src/main/java/org/apache/flink/streaming/connectors/kafka/internal/TransactionalIdsGenerator.java#L94]], prefix contains taskName of the particular task which could ultimately contain user code.  In some cases, user code contains conversion specifiers like %, the string formatting could fail.

For example, in Flink SQL code, user could have a LIKE statement with a % wildcard, the % wildcard will end up in the prefix and get mistreated during formatting, causing task to fail.



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