From c41623fd5ddf48fc656c92985c3f8d27130719fd Mon Sep 17 00:00:00 2001 From: Farooq Qaiser Date: Fri, 23 Feb 2024 09:40:59 -0500 Subject: [PATCH] Update docs about control topic reuse --- README.md | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/README.md b/README.md index 7cc9385e..5815f882 100644 --- a/README.md +++ b/README.md @@ -57,6 +57,11 @@ contain the name of the table. Enabling `iceberg.tables.upsert-mode-enabled` wil preceded by an equality delete. Both CDC and upsert mode require an Iceberg V2 table with identity fields defined. +It is safe to reuse the same `iceberg.control.topic` for multiple connectors as this is expected to be a +relatively low traffic topic. Connectors can distinguish between which messages are relevant to them or not by looking +at the `iceberg.control.group-id` that is encoded inside each message for this purpose. Naturally, this does mean that +`iceberg.control.group-id` cannot be shared between multiple connectors. + ## Kafka configuration By default the connector will attempt to use Kafka client config from the worker properties for connecting to