v1.3.8 (2026-05-08)

New Features

• Added auto.evolve configuration option for automatic table schema evolution. When enabled, the connector
  detects new fields in incoming records and issues ALTER TABLE ... ADD COLUMN IF NOT EXISTS against ClickHouse.
  Disabled by default. (#277)

Bug Fixes

• Fixed RowBinary serialization for Map columns with Nullable value types. The nullable marker byte was missing
  when writing map values, causing CANNOT_READ_ALL_DATA errors for Map(K, Nullable(V)) columns. (#687)
• Fixed com.clickhouse.kafka.connect.transforms.KeyToValue transformation to handle different schemas. Before
  this fix, the value schema was cached and not updated, making the transformation incompatible with evolving
  schemas. (#718)

Dependencies

• Updated clickhouse-java version from 0.9.4 to 0.9.5