[flink ]module errorcode optimization and documentation #3383
Description
[flink ]module errorcode optimization and documentation
Example：
documentation（文档）
Error code optimization（错误码优化）
Classes that need to be optimized（需要优化的类）
| class | path |
|---|---|
| ExecutorInitException | org.apache.linkis.engineconnplugin.flink.exception.ExecutorInitException |
| FlinkInitFailedException | org.apache.linkis.engineconnplugin.flink.exception.FlinkInitFailedException |
| JobExecutionException | org.apache.linkis.engineconnplugin.flink.exception.JobExecutionException |
| SqlExecutionException | org.apache.linkis.engineconnplugin.flink.exception.SqlExecutionException |
| SqlParseException | org.apache.linkis.engineconnplugin.flink.exception.SqlParseException |