实践数据湖iceberg 第四课 在sqlclient中，以sql方式从kafka读数据到iceberg（升级版本到flink1.12.7）

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前言

之前使用flink1.11.6 iceberg0.11 没写成功，升级flink到1.12.7

升级后版本：
flink-1.12.7-bin-scala_2.12
flink-sql-connector-hive-2.3.6_2.12-1.12.7.jar
kafka_2.12-2.4.1

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1. 启动flink sql

[root@hadoop101 bin]# sql-client.sh embedded -j /opt/software/iceberg-flink-runtime-0.12.1.jar  -j /opt/software/flink-sql-connector-hive-2.3.6_2.12-1.12.7.jar  -j /opt/software/flink-sql-connector-kafka_2.12-1.12.7.jar  shell 
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/opt/module/flink-1.12.7/lib/log4j-slf4j-impl-2.16.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]
No default environment specified.
Searching for '/opt/module/flink-1.12.7/conf/sql-client-defaults.yaml'...found.
Reading default environment from: file:/opt/module/flink-1.12.7/conf/sql-client-defaults.yaml
No session environment specified.

Command history file path: /root/.flink-sql-history
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