# 9. AVRO Schema Evolution

![](/files/-MDZYYBMq9__0quaxnvW)

![](/files/-MDZYm9sbBjlbr0-xQ_e)

1. Check what services is runing :

![](/files/-MDZYy6DuWOisiD92c3d)

2\. As we can see above control center is down . Lets bring it up:

![](/files/-MDZZD9SLUhPQ5jc_WLO)

3\. Now check & verify the control center :

localhost:9021

![](/files/-MDZZQTtOLEZcZz-iOol)

![](/files/-MDZZl_nQUBTt6ejtNIL)

Now validate the schema in the control center :

![](/files/-MDZ_3JFaCbEvHA5v-AF)

4\) Now once again create topic while adding one extra column no-of-rides on previously create COMPLAINT-TOPIC.

![](/files/-MDZ_T04bEs-Cgq2cM54)

Now go & check in the Control Center that our schema is Evolved .

![](/files/-MDZ_rKNETz_mqPmwZln)

\>>> Now go & check in KSQL it will show the stream with previous version without any brokage.

![](/files/-MDZa2iOBXBA33XTa0FN)

\>>> Now as our schema is eveolved we need to create a new stream in KSQL .

![](/files/-MDZaYn6m2NFcSqx_gqR)


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