long extract(final ConsumerRecord<Object, Object> record, final long previousTimestamp)WallclockTimestampExtractor
WallclockTimestampExtractor is a TimestampExtractor that uses the current wall clock time as timestamp when requested to extract a timestamp from a record.
extract Method
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Note
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extract is part of TimestampExtractor Contract to extract a timestamp from a record.
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extract simply requests the Java System for the current time in milliseconds.