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Old timestamps in ksqlDB tumbling windows tutorial
Source records for ratings in the ksqlDB tumbling windows tutorial (https://kafka-tutorials.confluent.io/create-tumbling-windows/ksql.html) are 2 years old, which can cause issues in the persistent query output. Since ksqlDB 0.11.0, windowed table output topics are now configured as compact,delete, so records with old timestamps might be purged quickly.