in flink-connector-rabbitmq/src/main/java/org/apache/flink/streaming/connectors/rabbitmq/RMQSource.java [347:357]
protected void acknowledgeSessionIDs(List<Long> sessionIds) {
try {
for (long id : sessionIds) {
channel.basicAck(id, false);
}
channel.txCommit();
} catch (IOException e) {
throw new RuntimeException(
"Messages could not be acknowledged during checkpoint creation.", e);
}
}