Adam Bellemare created KAFKA-12323:
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Summary: Record timestamps not populated in event
Key: KAFKA-12323
URL: https://issues.apache.org/jira/browse/KAFKA-12323
Project: Kafka
Issue Type: Bug
Affects Versions: 2.7.0
Reporter: Adam Bellemare
Upgraded a kafka streams application from 2.6.0 to 2.7.0. Noticed that the
events being produced had a "CreatedAt" timestamp = 0, causing downstream
failures as we depend on those timestamps. Reverting back to 2.6.0/2.6.1 fixed
this issue. This was the only change to the Kafka Streams application.
Consuming the event stream produced by 2.6.0 results in events that, when
consumed using the `kafka-avro-console-consumer` and `--property
print.timestamp=true` result in events prepended with the event times, such as:
```
CreateTime:1613072202271 <key> <value>
CreateTime:1613072203412 <key> <value>
CreateTime:1613072205431 <key> <value>
```
etc.
However, when those events are produced by the Kafka Streams app using 2.7.0,
we get:
```
CreateTime:0 <key> <value>
CreateTime:0 <key> <value>
CreateTime:0 <key> <value>
```
I don't know if these is a default value somewhere that changed, but this is
actually a blocker for our use-cases as we now need to circumnavigate this
limitation (or roll back to 2.6.1, though there are other issues we must deal
with then). I am not sure which unit tests in the code base to look at to
validate this, but I wanted to log this bug now in case someone else has
already seen this or an open one exists (I didn't see one though).
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