gaborgsomogyi commented on a change in pull request #24305: [SPARK-27294][SS]
Add multi-cluster Kafka delegation token
URL: https://github.com/apache/spark/pull/24305#discussion_r280769700
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File path: docs/structured-streaming-kafka-integration.md
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@@ -703,11 +703,99 @@ Kafka broker configuration):
After obtaining delegation token successfully, Spark distributes it across
nodes and renews it accordingly.
Delegation token uses `SCRAM` login module for authentication and because of
that the appropriate
-`spark.kafka.sasl.token.mechanism` (default: `SCRAM-SHA-512`) has to be
configured. Also, this parameter
+`spark.kafka.clusters.${cluster}.sasl.token.mechanism` (default:
`SCRAM-SHA-512`) has to be configured. Also, this parameter
must match with Kafka broker configuration.
When delegation token is available on an executor it can be overridden with
JAAS login configuration.
+#### Configuration
+
+Delegation tokens can be obtained from multiple clusters and
<code>${cluster}</code> is an arbitrary unique identifier which helps to group
different configurations.
Review comment:
Clarification added.
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