Flink Iceberg Source 并行度推断源码解析

Iceberg 提供了两个配置：

public static final ConfigOption TABLE_EXEC_ICEBERG_INFER_SOURCE_PARALLELISM =
  ConfigOptions.key("table.exec.iceberg.infer-source-parallelism")
      .booleanType()
      .defaultValue(true)
      .withDescription("If is false, parallelism of source are set by config.n" +
          "If is true, source parallelism is inferred according to splits number.n");

public static final ConfigOption TABLE_EXEC_ICEBERG_INFER_SOURCE_PARALLELISM_MAX =
  ConfigOptions.key("table.exec.iceberg.infer-source-parallelism.max")
      .intType()
      .defaultValue(100)
      .withDescription("Sets max infer parallelism for source operator.");

• table.exec.iceberg.infer-source-parallelism：默认是 true，意味着 source 的并