{
  "claim_boundary": "Parity only: unchanged Path A versus broker Path B; no broker fault claim.",
  "command": "make broker-verify",
  "environment": {
    "architecture": "x86_64",
    "cpu": {
      "logical_count": 8,
      "model": "AMD EPYC"
    },
    "docker_version": "29.7.2",
    "execution": "dedicated Docker-capable Linux VM; CPU-only; no GPU or co-tenant workloads",
    "hostname": "iZbp168wqbln65rhx2chs0Z",
    "kernel": "6.8.0-137-generic",
    "load_average_at_capture": [
      3.04931640625,
      1.27490234375,
      0.724609375
    ],
    "os": "Ubuntu 24.04.4 LTS",
    "ram_bytes": 32687382528
  },
  "finished_at": "2026-08-20T10:23:11Z",
  "git_sha": "4a98c4623baa",
  "logs": "showcase/logs/phase-b1-broker-verify-20260820T101332Z.log",
  "offset_checkpoint_snapshot_linkage": {
    "consumer_group": "p1-broker-parity-b1",
    "flink_checkpoint": {
      "external_path": "file:/opt/flink/checkpoints/f83c0411a80bcb10d2a31dcf809a3bc1/chk-2",
      "id": 2,
      "status": "COMPLETED"
    },
    "iceberg_snapshot_ids": {
      "orders_changelog": 1825239755258243701,
      "orders_current": 6610786198151286465
    },
    "kafka_offsets": [
      {
        "current_offset": 332,
        "lag": 0,
        "log_end_offset": 332,
        "partition": 0
      },
      {
        "current_offset": 317,
        "lag": 0,
        "log_end_offset": 317,
        "partition": 1
      },
      {
        "current_offset": 351,
        "lag": 0,
        "log_end_offset": 351,
        "partition": 2
      }
    ],
    "observation": "Kafka group offsets were read after this completed Flink checkpoint and the Iceberg snapshot IDs were read after row-level convergence.",
    "topic": "broker.cdc_lab.orders"
  },
  "parity": {
    "path_a_path_b_diff": {
      "missing_from_actual": [],
      "unexpected_in_actual": []
    },
    "row_level_diff_count": 0,
    "snapshot_digests_match": true,
    "source_path_b_diff": {
      "missing_from_actual": [],
      "unexpected_in_actual": []
    },
    "source_path_b_diff_count": 0
  },
  "path_a": {
    "changelog_row_count": 1000,
    "checkpoint": {
      "external_path": "file:/opt/flink/checkpoints/9dee38ff6e7b9f305f7d474c4d2fc9bd/chk-5",
      "id": 5
    },
    "delivery_chain": "MySQL binlog -> embedded Debezium -> Flink -> Iceberg",
    "iceberg_snapshot_ids": {
      "orders_changelog": 489493403877934462,
      "orders_current": 3334990757926710237
    },
    "job_class": "com.p1.reliability.cdc.CdcToIcebergJob",
    "job_id": "9dee38ff6e7b9f305f7d474c4d2fc9bd",
    "row_count": 1000,
    "snapshot_sha256": "5780efc5f0fb50058cfb68e2501a52c2f6a01e6e1f7cc96e3cff301507629d88",
    "source_diff_count": 0
  },
  "path_b": {
    "changelog_row_count": 1000,
    "delivery_chain": "MySQL GTID -> standalone Debezium at-least-once -> Kafka offsets -> Flink checkpoint -> Iceberg keyed upsert",
    "job_class": "com.p1.reliability.cdc.KafkaToIcebergJob",
    "job_id": "f83c0411a80bcb10d2a31dcf809a3bc1",
    "row_count": 1000,
    "snapshot_sha256": "5780efc5f0fb50058cfb68e2501a52c2f6a01e6e1f7cc96e3cff301507629d88"
  },
  "phase": "B1",
  "reader": "Flink SQL batch (Iceberg v2 equality-delete aware)",
  "run_id": "20260820T102311Z-5bbec087",
  "scenario": {
    "checkpoint_interval_ms": 5000,
    "events": 1000,
    "initial_topic_end_offsets": [
      {
        "log_end_offset": 0,
        "partition": 0
      },
      {
        "log_end_offset": 0,
        "partition": 1
      },
      {
        "log_end_offset": 0,
        "partition": 2
      }
    ],
    "seed": 17,
    "topic": "broker.cdc_lab.orders",
    "topic_end_offsets_before_path_b": [
      {
        "log_end_offset": 332,
        "partition": 0
      },
      {
        "log_end_offset": 317,
        "partition": 1
      },
      {
        "log_end_offset": 351,
        "partition": 2
      }
    ],
    "topic_key": "orders.order_id primary key",
    "topic_partitions": 3
  },
  "stack_versions": {
    "broker_serialization": "Kafka Connect JSON schema envelope (B1)",
    "debezium_connect": "3.2.4.Final",
    "flink": "1.20.4",
    "flink_cdc": "3.6.0",
    "flink_kafka_connector": "3.4.0-1.20",
    "iceberg": "1.10.x",
    "java": "11",
    "kafka": "3.9.2 (single-node KRaft)",
    "maven": "3.9",
    "minio": "RELEASE.2025-04-22T22-12-26Z",
    "mysql": "8.0.36",
    "node": "20",
    "python": "3.11",
    "schema_registry": "Confluent 7.9.8",
    "starrocks": "3.3.x (M3+)"
  },
  "started_at": "2026-08-20T10:21:56Z",
  "summary": {
    "kafka_lag_zero": true,
    "linkage_complete": true,
    "passed": true,
    "path_a_path_b_row_level_diff_zero": true,
    "source_path_b_row_level_diff_zero": true
  }
}