【clickhouse】flink clickhouse sink Class.forName 卡死

1 Overview

A flink project needs flink-clickhouse-sink, and then the
git address found on git: https://github.com/ivi-ru/flink-clickhouse-sink.git

https://github.com/ivi-ru/flink-clickhouse-sink/blob/master/src/main/java/ru/ivi/opensource/flinkclickhousesink/ClickHouseSink.java

Then because it needs to do some processing before ClickhouseWriter writes, get the table structure information.