Stream-GlobalTable left join not working as expected

Description

Performing a Stream-GlobalTable left join does not pickup matching keys. Right side values (from table) are always empty/null. The same logic implemented in Java with Streams API works correctly and picks up the matching keys correctly.

How to reproduce

Topic 1 : JoinSample-1 Messages --> Key:Value 100:tableValue-1 200:tableValue-2 300:tableValue-3

Topic 2 : JoinSample-2 Messages --> Key:Value 100:streamValue-4 300:streamValue-3 50:streamValue-8 500:streamValue-2 600:streamValue-1 700:streamValue-5 800:streamValue-6 900:streamValue-7

EXPECTED JoinedEvent Messages --> Key:Value 100:streamValue-4joinedWithtableValue-1 300:streamValue-3joinedWithtableValue-3 50:streamValue-8joinedWith 500:streamValue-2joinedWith 600:streamValue-1joinedWith 700:streamValue-5joinedWith 800:streamValue-6joinedWith 900:streamValue-7joinedWith

ACTUAL JoinedEvent Messages (fails to pickup values for Key 100 and 300 from Table topic) --> Key:Value 100:streamValue-4joinedWith 300:streamValue-3joinedWith 50:streamValue-8joinedWith 500:streamValue-2joinedWith 600:streamValue-1joinedWith 700:streamValue-5joinedWith 800:streamValue-6joinedWith 900:streamValue-7joinedWith

Checklist

Please provide the following information:

• A complete (i.e. we can run it), minimal program demonstrating the problem. No need to supply a project file. - code attached
• A code snippet with your topology builder (ex: builder.Stream<string, string>(“topic”).to(“an-another-topic”)😉 - see attached code
• Streamiz.Kafka.Net nuget version. - 1.3.0
• Apache Kafka version. - 6.0.1-ce Confluent Server
• Client configuration. -->

 var config = new StreamConfig<StringSerDes, StringSerDes>
            {
                ApplicationId = $"test-kstreams-{Guid.NewGuid()}",
                BootstrapServers = "localhost:29092",
                AutoOffsetReset = AutoOffsetReset.Earliest
            };

• Operating system. - linux
• Provide logs (with in debug mode (log4net and StreamConfig.Debug) as necessary in configuration). - attached file
• Critical issue - NA Program.txt logs.txt .

[mayur-rao]

Wonderful. I tested and looks like it is working as expected. Thanks for the quick fix.

[mayur-rao]

Hi @LGouellec ,

Yes, I can confirm that both topics have messages before I run the streams app. Also I made sure that the timestamps for the topic I want to use as table (JoinSample-1 above) are before the topic I want to use as stream (JoinSample-2).