Add cdc redo configuration (#15619) (#15627)

ticdc/ticdc-changefeed-config.md

@@ -192,6 +192,9 @@ flush-worker-num = 8
 # The behavior to compress redo log files.
 # Available options are "" and "lz4". The default value is "", which means no compression.
 compression = ""
+# The concurrency for uploading a single redo file.
+# The default value is 1, which means concurrency is disabled.
+flush-concurrency = 1
 
 # The following configuration items only take effect when the downstream is Kafka. Supported starting from v6.5.3.
 [sink.kafka-config]

ticdc/ticdc-open-api-v2.md

@@ -292,6 +292,8 @@ The `consistent` parameters are described as follows:
 | `use_file_backend` | `BOOL` type. Specifies whether to store the redo log in a local file. (Optional) |
 | `encoding_worker_num` | `INT` type. The number of encoding and decoding workers in the redo module. (Optional)             |
 | `flush_worker_num`    | `INT` type. The number of flushing workers in the redo module. (Optional)             |
+| `compression`         | `STRING` type. The behavior to compress redo log files. Available options are `""` and `"lz4"`. The default value is `""`, which means no compression. (Optional) |
+| `flush_concurrency`   | `INT` type. The concurrency for uploading a single file. The default value is `1`, which means concurrency is disabled. (Optional)                                     |
 
 The `filter` parameters are described as follows:
 

ticdc/ticdc-sink-to-kafka.md

@@ -134,7 +134,7 @@ The following are examples when using Kafka SASL authentication:
 
     The minimum set of permissions required for TiCDC to function properly is as follows.
 
-    - The `Create` and `Write` permissions for the Topic [resource type](https://docs.confluent.io/platform/current/kafka/authorization.html#resources).
+    - The `Create`, `Write`, and `Describe` permissions for the Topic [resource type](https://docs.confluent.io/platform/current/kafka/authorization.html#resources).
     - The `DescribeConfigs` permission for the Cluster resource type.
 
 ### Integrate TiCDC with Kafka Connect (Confluent Platform)