apache / apache/iotdb

[Bug] flink CDCExample不能用

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Description

### Search before asking

- [X] I searched in the [issues](https://github.com/apache/iotdb/issues) and found nothing similar.

### Version

iotdb 1.3.2

### Describe the bug and provide the minimal reproduce step

参考官方例子:
public static void main(String[] args) {
EnvironmentSettings settings = EnvironmentSettings.newInstance().inStreamingMode().build();
TableEnvironment tableEnv = TableEnvironment.create(settings);
// source
Schema sourceTableSchema =
Schema.newBuilder()
.column("Time_", DataTypes.BIGINT())
.column("root.zhang.table3.id", DataTypes.INT())
.column("root.zhang.table3.name", DataTypes.STRING())
.column("root.zhang.table3.address", DataTypes.STRING())
.build();

TableDescriptor tableDescriptor =
TableDescriptor.forConnector("IoTDB")
.schema(sourceTableSchema)
.option("mode", "CDC")
.option("cdc.task.name", "test2")
.option("cdc.pattern", "root.zhang.table3")
.option("cdc.port", "18089")
.build();
tableEnv.createTemporaryTable("source_table", tableDescriptor);

// output table
tableEnv.from("source_table").execute().print();

发现执行后,没有数据打印

在iot界面,这个实体是有数据的
![image](https://github.com/user-attachments/assets/67889731-ec10-4a0d-bc5d-c80d39195c5a)

### What did you expect to see?

期望官方例子 CDCExample,能够正确执行

### What did you see instead?

no

### Anything else?

_No response_

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!

Contributor guide

Open the contributing guide

Research direction

Start with the official CDCExample entry point and run the supplied IoTDB 1.3.2 reproduction using the shown CDC options and schema. Check why executing the source table prints no rows even though the entity contains data in the IoTDB interface. Done means the example correctly prints CDC data for root.zhang.table3.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
databases
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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