Mr Kafka created KAFKA-7510:
-------------------------------
Summary: KStreams RecordCollectorImpl leaks data to logs on error
Key: KAFKA-7510
URL: https://issues.apache.org/jira/browse/KAFKA-7510
Project: Kafka
Issue Type: Bug
Components: streams
Reporter: Mr Kafka
org.apache.kafka.streams.processor.internals.RecordCollectorImpl leaks data on
error as it dumps the *value* / message payload to the logs.
This is problematic as it may contain personally identifiable information (pii)
or other secret information to plain text log files which can then be
propagated to other log systems i.e Splunk.
I suggest the *key*, and *value* fields be moved to debug level as it is useful
for some people while error level contains the *errorMessage, timestamp, topic*
and *stackTrace*.
{code:java}
private <K, V> void recordSendError(
final K key,
final V value,
final Long timestamp,
final String topic,
final Exception exception
) {
String errorLogMessage = LOG_MESSAGE;
String errorMessage = EXCEPTION_MESSAGE;
if (exception instanceof RetriableException) {
errorLogMessage += PARAMETER_HINT;
errorMessage += PARAMETER_HINT;
}
log.error(errorLogMessage, key, value, timestamp, topic,
exception.toString());
sendException = new StreamsException(
String.format(
errorMessage,
logPrefix,
"an error caught",
key,
value,
timestamp,
topic,
exception.toString()
),
exception);
}{code}
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