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Kafka AlterReplicaLogDirs Request Wire Format v1 — Binary Protocol Layout

What is AlterReplicaLogDirs?

Moves replicas to a different disk on the same broker via kafka-reassign-partitions.sh, rebalancing disk usage without cross-broker data movement. The move is asynchronous; use DescribeLogDirs to monitor progress by checking the futureLogDir field.

Related Errors

CLUSTER_AUTHORIZATION_FAILED

Wire Diagram

Request Header
message_size int32 · 4B
api_key int16 · 2B
api_version int16 · 2B
correlation_id int32 · 4B
client_id string
AlterReplicaLogDirsRequest v1
Dirs array
Path string
Topics array
Name string
Partitions []int32

Schema & Example

Schema
{
  "Dirs": [{
      "Path": string,
      "Topics": [{
          "Name": string,
          "Partitions": [int32]
      }]
  }]
}
Example
{
  "Dirs": [{
      "Path": "/var/kafka-logs/orders-3",
      "Topics": [{
          "Name": "orders",
          "Partitions": [1, 2, 3]
      }]
  }]
}