Error when table has alias with Nullable type

[ne1r0n]

Describe the bug

When there is an alias with Nullable type in the table, error messages appear in the logs. Connector keeps working, but error messages clutter the logs when handling a large number of tables.

Steps to reproduce

1. Create a table

CREATE TABLE alias
(
    s String,
    a Nullable(String) ALIAS s
)
ENGINE = ReplicatedMergeTree()
ORDER BY tuple();

2. Run connector
3. Check logs

Expected behaviour

Clean logs

Error log

ERROR [ch-kt-connector-dev|task-1] Got non-root column, but its parent was not found to be updated. UINT8{name=a.null} (com.clickhouse.kafka.connect.sink.db.mapping.Table:70)

Configuration

Environment

• Kafka-Connect version: 1.2.9

[Paultagoras]

@ne1r0n Will take a look - thanks for reporting!

[Paultagoras]

Note to future self - see https://clickhouse.com/docs/sql-reference/statements/create/table#alias