v1.3.6

New Features

• Added internal record buffering support via bufferCount and bufferFlushTime configuration options.
  When enabled, records from multiple poll() calls are accumulated and flushed as a single large batch,
  reducing the number of insert operations to ClickHouse. Buffering is disabled by default (bufferCount=0) for full backward compatibility. (#658)

Improvements

• Report inserted offsets in preCommit() method. Previously connector was returning same map that is passed to
  the method. This may lead to missed offsets in a situation of partition rebalance. Feature is turned off
  by default and reportInsertedOffsets property should be set to true to enable. (#669)

Bug Fixes

• Fixed invalid concurrency handling in ClickHouseWriter.updateMapping. Previously flag was set not in atomic way. (#678)
• Fixes handling server error "Code 33" after schema is updated. Previously logic did not wait for target table to be updated.
  After the fix logic will use describe of a single table when detects that updateMapping is running. (#680)