SteNicholas commented on a change in pull request #18502:
URL: https://github.com/apache/flink/pull/18502#discussion_r791593327
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File path: docs/content.zh/docs/connectors/datastream/kafka.md
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@@ -176,6 +176,15 @@ env.fromSource(kafkaSource, new CustomWatermarkStrategy(),
"Kafka Source With Cu
```
[这篇文档]({{< ref "docs/dev/datastream/event-time/generating_watermarks.md"
>}})描述了如何自定义水印策略（```WatermarkStrategy```）。
+### Idleness
Review comment:
```suggestion
### 空闲
如果并行度高于分区数，Kafka Source
不会自动进入空闲状态。您将需要降低并行度或向水印策略添加空闲超时。如果在这段时间内没有记录在流的分区中流动，则该分区被视为“空闲”并且不会阻止下游操作符中水印的进度。
```
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