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[SPARK-28464][Doc][SS] Document Kafka source minPartitions option #25219

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[SPARK-28464][Doc][SS] Document Kafka source minPartitions option #25219

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[SPARK-28464] Document kafka source minPartitions option
Jul 21, 2019
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[SPARK-28464] Set default minPartitions to None
Jul 21, 2019
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[SPARK-28464] Review comments
Jul 21, 2019
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10 changes: 10 additions & 0 deletions docs/structured-streaming-kafka-integration.md
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Expand Up @@ -388,6 +388,16 @@ The following configurations are optional:
<td>streaming and batch</td>
<td>Rate limit on maximum number of offsets processed per trigger interval. The specified total number of offsets will be proportionally split across topicPartitions of different volume.</td>
</tr>
<tr>
<td>minPartitions</td>
<td>int</td>
<td></td>
<td>streaming and batch</td>
<td>Minimum number of partitions to read from Kafka.
By default, Spark has a 1-1 mapping of Kafka TopicPartitions to Spark partitions consuming from Kafka.
If you set the minPartitions option to a value greater than your Kafka TopicPartitions,
Spark will divvy up large Kafka partitions to smaller pieces.
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@dongjoon-hyun dongjoon-hyun Jul 21, 2019

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</td> is missed. I'll fix that during merging.

</tr>
<tr>
<td>groupIdPrefix</td>
<td>string</td>
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