marathon-match-api-v6

NestJS service for managing marathon match scorer configuration, compiling tester JARs, consuming submission events from Kafka, and launching ECS scoring tasks.

Service base path

All HTTP endpoints are exposed under:

/v6/marathon-match

Swagger UI:

/v6/marathon-match/api-docs

Documentation

Marathon Match Setup - for challenge administrators
ECS Runner Lifetime - how scorer tasks are launched, monitored, and stopped
Submission Phase Scoring - for DevOps
Review Phase Scoring - for DevOps
Full Marathon Match Test Script - for end-to-end smoke tests with production baseline fixtures

Configuration values

The service is configured via environment variables.

Core service and database

Variable	Required	Default	Used for
`PORT`	No	`3000`	HTTP listen port
`NODE_ENV`	No	(unset)	Token-expiration behavior and Prisma logging behavior
`CORS_ALLOWED_ORIGIN`	No	Built-in localhost/topcoder regex list	Exact CORS matching for a full browser Origin value
`DATABASE_URL`	Yes	None	Prisma + pg-boss Postgres connection
`POSTGRES_SCHEMA`	No	`public`	Prisma schema name used in runtime logging/connection context
`MM_SERVICE_PRISMA_TIMEOUT`	No	`10000`	Prisma transaction timeout (ms)

JWT auth and M2M auth

Variable	Required	Default	Used for
`AUTH_SECRET`	Yes (for JWT validation)	None	tc-core JWT authenticator secret
`VALID_ISSUERS`	No	Topcoder/Auth0 issuer JSON array string	Accepted JWT issuers
`AUTHORIZATION_SESSION_VALIDATION_ENABLED`	No	`true`	Enables Identity API active-session validation for user JWTs
`AUTHORIZATION_VALIDATION_URL`	No	Derived from `https://api.topcoder(-dev).com` token issuers	Full Identity API `authorizations/1` URL used to reject logged-out user tokens
`AUTHORIZATION_VALIDATION_TIMEOUT_MS`	No	`3000`	Timeout for active-session validation requests
`AUTH0_ISSUER`	No	`https://topcoder-dev.auth0.com/`	Legacy JWT config field
`TOKEN_AUDIENCE`	No	`https://m2m.topcoder-dev.com/`	Legacy JWT config field
`AUTH0_URL`	No	`http://localhost:4000/oauth/token`	M2M token endpoint
`AUTH0_DOMAIN`	No	`topcoder-dev.auth0.com`	M2M config metadata
`AUTH0_AUDIENCE`	No	`https://m2m.topcoder-dev.com/`	M2M audience
`AUTH0_PROXY_SERVER_URL`	No	(unset)	Optional M2M proxy
`AUTH0_CLIENT_ID`	Yes (for outbound API calls)	None	M2M client ID
`AUTH0_CLIENT_SECRET`	Yes (for outbound API calls)	None	M2M client secret

Kafka consumer/producer

Variable	Required	Default	Used for
`DISABLE_KAFKA`	No	`false`	Fully disable Kafka connection/consumption
`KAFKA_URL`	No	`localhost:9092`	Broker list (comma-separated). If unset, `KAFKA_BROKERS` is also accepted
`KAFKA_BROKERS`	No	(fallback only)	Alternative broker list env key (review-api compatibility)
`KAFKA_CLIENT_ID`	No	`tc-marathon-match-api`	Kafka client ID
`KAFKA_GROUP_ID`	No	`tc-marathon-match-consumer-group`	Consumer group ID
`KAFKA_SSL_ENABLED`	No	`false`	Enable TLS
`KAFKA_SASL_MECHANISM`	No	`plain`	SASL mechanism (`plain`, `scram-sha-256`, `scram-sha-512`)
`KAFKA_SASL_USERNAME`	No	(unset)	SASL username (enables SASL when set)
`KAFKA_SASL_PASSWORD`	No	empty string	SASL password
`KAFKA_CONNECTION_TIMEOUT`	No	`10000`	Kafka connect timeout (ms)
`KAFKA_REQUEST_TIMEOUT`	No	`30000`	Kafka request timeout (ms)
`KAFKA_MAXBYTES` / `KAFKA_MAX_BYTES`	No	Kafka client default	Consumer fetch max bytes (dev parity with review-api usage)
`KAFKA_MIN_BYTES`	No	Kafka client default	Consumer fetch minimum bytes
`KAFKA_MAX_WAIT_TIME`	No	Auto-derived from request timeout	Consumer fetch max wait (ms)
`KAFKA_RETRY_ATTEMPTS`	No	`5`	Client reconnection retry count
`KAFKA_INITIAL_RETRY_TIME`	No	`100`	Initial retry delay (ms)
`KAFKA_MAX_RETRY_TIME`	No	`30000`	Max exponential retry delay (ms)
`KAFKA_DLQ_ENABLED`	No	`false`	Enable DLQ publishing after retry exhaustion
`KAFKA_DLQ_TOPIC_SUFFIX`	No	`.dlq`	DLQ topic suffix
`KAFKA_DLQ_MAX_RETRIES`	No	`3`	Per-message retries before DLQ

Scoring completion email notifications

When both EXAMPLE and PROVISIONAL review summations are complete for a submission, the service sends one email event through Bus API topic external.action.email. When SYSTEM scoring is complete for every latest member submission in the challenge, the service sends separate system-results emails with each member's final placement. Both template payloads include scoringStatus as pass or fail, and local notification markers prevent duplicate sends for duplicate scorer callbacks. The email challengeName is resolved from challenge-api-v6, not from the local Marathon Match scorer config name. The service resolves member identity from submission-api-v6 using the submission ID; if no handle is present, it uses the submission userId or memberId to call member-api-v6 GET /members?userId={userId} before publishing the email event.

Variable	Required	Default	Used for
`SENDGRID_TEMPLATE_ID_SCORING_COMPLETE`	Yes (to send emails)	None	SendGrid template ID for example/provisional completion emails
`SENDGRID_TEMPLATE_ID_SYSTEM_TEST_RESULTS`	Yes (to send emails)	None	SendGrid template ID for system test result emails
`MEMBER_API_URL`	No	`https://api.topcoder-dev.com/v6`	member-api-v6 base URL used to fetch the competitor email by handle
`BUS_EVENTS_URL`	No	(derived)	Full Bus API event endpoint URL; overrides the base URL variables
`BUS_API_URL` / `BUSAPI_URL`	No	`https://api.topcoder-dev.com/v5`	Bus API base URL used to publish `external.action.email` events
`TC_EMAIL_FROM_EMAIL` / `EMAIL_FROM`	No	`no-reply@topcoder.com`	Sender and reply-to address for the email payload

Marathon scoring integration

Variable	Required	Default	Used for
`CHALLENGE_API_URL`	No	`https://api.topcoder-dev.com`	Challenge API lookup for current active phase
`RESOURCES_API_URL`	No	`${CHALLENGE_API_URL}/v6/resources`	Resource API lookup for challenge-specific copilot access to manual reruns
`DISABLE_PG_BOSS`	No	`false`	Disable pg-boss queue/worker and run tester compilation inline
`DEFAULT_REVIEW_SCORECARD_ID`	Yes (for UI defaults)	None	Default review scorecard returned by `GET /challenge/defaults`
`DEFAULT_TEST_TIMEOUT_MS`	No	`90000`	Default test timeout returned by `GET /challenge/defaults`
`DEFAULT_COMPILE_TIMEOUT_MS`	No	`120000`	Default compile timeout returned by `GET /challenge/defaults`
`DEFAULT_SYSTEM_TEST_TIMEOUT_MS`	No	`86400000`	Default total SYSTEM scoring timeout returned by `GET /challenge/defaults`
`DEFAULT_TASK_DEFINITION_NAME`	No	empty string	Default ECS task definition family returned by `GET /challenge/defaults`
`DEFAULT_TASK_DEFINITION_VERSION`	No	empty string	Default ECS task definition revision returned by `GET /challenge/defaults`
`COMPILE_TIMEOUT_MS`	No	`120000`	Maven tester compilation timeout
`COMPILE_JAVA_MAX_HEAP_MB`	No	`384`	Max JVM heap (MB) enforced for tester compilation Maven process when `-Xmx` is not already provided
`COMPILE_MAVEN_OPTS`	No	(auto-derived)	Compile-worker specific `MAVEN_OPTS`; if unset, falls back to `MAVEN_OPTS` and auto-appends `-Xmx` cap
`MVN_BINARY`	No	`mvn`	Maven executable for tester compilation
`BOILERPLATE_DIR`	No	`<repo>/ecs-runner/boilerplate`	Java boilerplate project copied for compilation
`COMPILATION_TMP_DIR`	No	Auto-discovery (`TMPDIR`, `/dev/shm` on Linux, `os.tmpdir()`, `<repo>/tmp`)	Writable temp root used for compile workspaces; set to `/dev/shm` to keep workspace on memory-backed tmpfs
`PG_BOSS_COMPILE_TEAM_SIZE`	No	`1`	Number of pg-boss compile workers processing jobs in parallel
`PG_BOSS_COMPILE_TEAM_CONCURRENCY`	No	`1`	Per-worker concurrency for compile jobs

ECS launch configuration

Variable	Required	Default	Used for
`AWS_REGION`	No	`us-east-1`	AWS SDK ECS client region
`ECS_CLUSTER`	Yes (for scoring)	None	ECS cluster for `RunTask`
`ECS_SUBNETS`	Yes (for scoring)	None	Comma-separated subnets for awsvpc task networking
`ECS_SECURITY_GROUPS`	Yes (for scoring)	None	Comma-separated security groups for awsvpc networking
`ECS_CONTAINER_NAME`	Yes (for scoring)	None	Container override target in task definition
`ECS_SCORER_MAX_CONCURRENT_TASKS`	No	`20`	Maximum pending/running Marathon Match scorer tasks this API will allow before retry back-pressure
`MARATHON_MATCH_API_URL`	Yes (for scoring)	None	Base URL passed to ECS runner
`REVIEW_API_URL`	Yes (for scoring)	None	Review API base URL used by NestJS scoring callback processor
`REVIEW_TYPE_ID`	Yes (for scoring)	None	Review type ID passed to ECS runner callback payload
`DEBUG_LOG_ACCESS_TOKEN`	No	`false`	Pass-through to ECS runner for access-token debug logging (redacted token + decoded JWT header/payload)

launchScorerTask(...) already disables public IP assignment for scorer tasks. It also enforces the pending/running scorer task cap before calling RunTask, skips duplicate active launches for the same challenge/submission/phase, and stops older active tasks for the same challenge/member when a newer submission arrives. Use dedicated scorer security groups with least-privilege egress for the trusted bootstrap/callback traffic that remains on the parent runner process.

ECS runner task environment (injected at launch)

These are required by ecs-runner and are passed in container overrides when a task is launched:

TESTER_CONFIG_ID (contains the challenge ID used by /challenge/:challengeId endpoints)
SUBMISSION_ID
ACCESS_TOKEN
MARATHON_MATCH_API_URL
REVIEW_TYPE_ID
TEST_PHASE
PHASE_CONFIG_TYPE
PHASE_START_SEED (decimal 64-bit integer string)
PHASE_NUMBER_OF_TESTS
REVIEW_ID (optional; used for SYSTEM review completion callbacks)

Optional debug vars (set on API service env to be forwarded to runner):

DEBUG_LOG_ACCESS_TOKEN

Submission isolation inside the ECS runner

The ECS task still needs trusted outbound access to fetch challenge config, download submission artifacts, upload artifacts, and post the scoring callback. Untrusted tester/submission execution is therefore split from that bootstrap logic inside the container:

The container starts as root. Do not override the ECS task-definition user; the trusted runner needs root only to drop submitted solution commands to scorer.
The trusted parent runner holds ACCESS_TOKEN, performs network calls, and never loads untrusted submission code directly.
The parent launches a separate child JVM through mm-runner-isolate with a scrubbed environment, so submission processes do not inherit the bearer token or other runner env vars.
Generic submitted solution commands run through mm-scorer-isolate as the separate non-root scorer user. Downloaded tester JARs and serialized scorer config are kept runner-owned mode 0400, so submitted code cannot read or modify them from /tmp.
Standard generic-runner seed execution asks mm-scorer-isolate to reset scorer-owned writable state before and after each test case. The cleanup helper only scans fixed writable roots such as /tmp, /var/tmp, /dev/shm, and the scorer home, and only removes entries owned by the scorer UID.
Generic submitted solution commands also run under a filesystem allowlist that permits runtime/toolchain reads and scorer temp writes but does not permit reading infrastructure paths such as /etc/hostname, /etc/resolv.conf, /proc/self/cgroup, /proc/self/mounts, or proc network tables.
Native wrappers block io_uring and creation of non-AF_UNIX sockets for submitted solution processes and their fork/exec children, so submissions cannot open live outbound network connections.
Standard Topcoder Marathon testers run through the generic runner flow, which creates the callback score payload from trusted runner code. Custom tester runTester(...) result maps remain supported for advanced cases.

Exit code 137 (OOM) mitigation

137 usually means the process was killed by the container runtime due to memory pressure. For development environments with tight memory limits, use these settings first:

COMPILE_JAVA_MAX_HEAP_MB=256
COMPILE_MAVEN_OPTS="-Xms128m -Xmx256m"
PG_BOSS_COMPILE_TEAM_SIZE=1
PG_BOSS_COMPILE_TEAM_CONCURRENCY=1

If you are not actively consuming submission events or async compile queues in a dev smoke test, also disable background workers:

DISABLE_KAFKA=true
DISABLE_PG_BOSS=true

Endpoints and auth

All secured endpoints require Authorization: Bearer <token>.

Auth model in code:

User JWT with role administrator passes role checks.
User JWT with role copilot also passes the scorer/tester setup routes used by platform-ui.
M2M JWT passes with required scope.
all:marathon-match and all:marathon-match-tester are expanded to their CRUD scopes.

Public endpoints

Method	Path	Auth	Notes
`GET`	`/v6/marathon-match/health`	None	DB and Kafka consumer health check
`GET`	`/v6/marathon-match/api-docs`	None	Swagger docs route

Tester endpoints

Method	Path	Required role/scope
`POST`	`/v6/marathon-match/testers`	`administrator` OR `copilot` OR `create:marathon-match-tester`
`GET`	`/v6/marathon-match/testers`	`administrator` OR `copilot` OR `read:marathon-match-tester`
`GET`	`/v6/marathon-match/testers/:id`	`administrator` OR `copilot` OR `read:marathon-match-tester`
`PUT`	`/v6/marathon-match/testers/:id`	`administrator` OR `copilot` OR `update:marathon-match-tester`
`DELETE`	`/v6/marathon-match/testers/:id`	`administrator` OR `delete:marathon-match-tester`

POST /v6/marathon-match/testers creates only the first record in a tester family and rejects names that already exist. GET /v6/marathon-match/testers returns tester summary rows only. GET /v6/marathon-match/testers/:id returns tester details with sourceCode. PUT /v6/marathon-match/testers/:id creates a new tester version while preserving older versions for lookup and selection. Detail and version-create responses omit jarFile by default; add ?includeJarFile=true only when you explicitly need the compiled jar payload.

Marathon match config endpoints

Method	Path	Required role/scope
`POST`	`/v6/marathon-match/challenge/:challengeId`	`administrator` OR `copilot` OR `create:marathon-match`
`GET`	`/v6/marathon-match/challenge`	`administrator` OR `read:marathon-match`
`GET`	`/v6/marathon-match/challenge/defaults`	`administrator` OR `copilot` OR `read:marathon-match`
`GET`	`/v6/marathon-match/challenge/:challengeId`	`administrator` OR `copilot` OR `read:marathon-match`
`GET`	`/v6/marathon-match/challenge/:challengeId/tester-jar`	`administrator` OR `read:marathon-match`
`PUT`	`/v6/marathon-match/challenge/:challengeId`	`administrator` OR `copilot` OR `update:marathon-match`
`DELETE`	`/v6/marathon-match/challenge/:challengeId`	`administrator` OR `delete:marathon-match`

Submission runner log endpoint

Method	Path	Required role/scope
`GET`	`/v6/marathon-match/submissions/:submissionId/runner-logs`	`administrator` OR `copilot` OR `Manager` OR `read:marathon-match`

Internal scoring callback endpoint

Method	Path	Required role/scope
`POST`	`/v6/marathon-match/internal/scoring-progress`	`administrator` OR `update:marathon-match`
`POST`	`/v6/marathon-match/internal/scoring-results`	`administrator` OR `update:marathon-match`
`POST`	`/v6/marathon-match/internal/system-score`	`administrator` OR `update:marathon-match`

POST /v6/marathon-match/internal/scoring-results rejects callbacks whose challengeId does not map to an existing Marathon Match config. POST /v6/marathon-match/internal/scoring-progress stores runner progress in review summation metadata as testProcess (provisional or system), testProgress (0 to 1), and testStatus (IN PROGRESS, SUCCESS, or FAILED).

How to set up a challenge for marathon match scoring

For the full operator guide, see Marathon Match Setup. The steps below remain as a quick reference.

1. Create a tester

Create a tester (POST /testers) with:

name
version
className (fully-qualified Java Marathon tester class)
sourceCode

POST /testers is only for a brand-new tester name. If that tester family already exists, use PUT /testers/:id and a higher version instead.

Compilation is async through pg-boss. The create/version-create endpoint returns before compilation finishes and includes the tester record you should poll for compilation status.

2. Wait for compilation success

Poll GET /testers/:id until:

compilationStatus = SUCCESS

If you need the compiled jar in the response, call GET /testers/:id?includeJarFile=true after compilation succeeds.

If compilationStatus = FAILED, publish a higher tester version via PUT /testers/:id.

3. Create challenge config

Create config on the challenge id (POST /challenge/:challengeId) and include at minimum:

testerId (from step 1)
reviewScorecardId
relativeScoringEnabled (true to normalize scores against the latest submission per member; defaults to true)
scoreDirection (MAXIMIZE when higher raw testcase scores are better, MINIMIZE when lower scores are better)
submissionApiUrl
taskDefinitionName
taskDefinitionVersion
active (true to enable scoring)
phase mappings (example, provisional, system) with:
- phaseId (from challenge-api phases[].phaseId, not the challenge-phase row id)
- startSeed as a decimal string for full PostgreSQL BIGINT/Java long range support
- numberOfTests

Config identity semantics:

id is an internal nano-id for the marathon match config record.
challengeId stores the challenge identifier and is used for /challenge/:challengeId CRUD endpoints.
POST /challenge/:challengeId validates that the challenge exists in challenge-api and that reviewScorecardId resolves in review-api before persisting. If a config already exists for the challenge, the API returns 409 Conflict.
phaseConfig.phaseId stores the canonical challenge phase definition id from challenge-api phases[].phaseId. Create/update requests also accept the challenge-phase row id and normalize it before persistence for backwards compatibility.
reviewScorecardId can be either the current review-api scorecard id or a legacy id; scoring callback processing resolves it to the canonical scorecard id before posting review summations.
When relativeScoringEnabled = true, review scores are recomputed from per-test raw scores against the best score currently held by the latest submission from each member, so final review summation scores stay within 0..100 and can change as new submissions arrive.

Important runtime behavior:

Incoming submission events are only processed when config is active = true.
The handler resolves currently open challenge phases from challenge-api (phases[].isOpen = true) and matches stored phase config rows by the canonical challenge phaseId. Legacy stored challenge-phase row ids are also recognized for backwards compatibility.
If no matching phase config exists, the submission is skipped.
If multiple phase configs match the currently open challenge phases, the handler launches one scorer task per match. This allows EXAMPLE and PROVISIONAL scoring to run from the same Submission phase when both configs point at that phase.

4. Ensure scorer infrastructure is configured

Before live scoring, verify:

Kafka topic marathonmatch.submission.received is receiving events.
Service can fetch M2M token (AUTH0_CLIENT_ID/AUTH0_CLIENT_SECRET).
ECS env vars are set (ECS_CLUSTER, ECS_SUBNETS, ECS_SECURITY_GROUPS, ECS_CONTAINER_NAME, MARATHON_MATCH_API_URL, REVIEW_API_URL, REVIEW_TYPE_ID).
Task definition referenced by taskDefinitionName:taskDefinitionVersion exists and contains the configured container name.

5. Optional verification calls

GET /challenge/:challengeId to verify stored config and phase mappings.
GET /challenge/:challengeId/tester-jar to verify compiled jar retrieval.

ECS runner image (ECR)

The scorer task launched by EcsService must reference an ECR image built from:

ecs-runner/Dockerfile

Recommended publish flow:

AWS_REGION=us-east-1 ECR_REPOSITORY=mm-ecs-runner ./ecs-runner/scripts/build-and-push-ecr.sh

Detailed runner image and tagging guidance:

ecs-runner/README.md

Submission scoring flow (Kafka to score)

sequenceDiagram
  autonumber
  participant K as Kafka Topic<br/>marathonmatch.submission.received
  participant C as KafkaConsumerService
  participant H as MarathonMatchSubmissionHandler
  participant DB as Postgres (Prisma)
  participant CA as challenge-api-v6
  participant ECS as EcsService
  participant F as AWS ECS Fargate Task
  participant MM as marathon-match-api-v6
  participant SA as Submission API
  participant SRS as ScoringResultService
  participant RA as review-api-v6

  K->>C: Submission event envelope ({topic, payload{submissionId, challengeId, ...}})
  C->>H: handle(payload)
  H->>DB: Load marathonMatchConfig + tester + phaseConfigs

  alt Config missing or inactive
    H-->>C: Skip message
  else Config active
    H->>CA: GET /v6/challenges/:challengeId (M2M token)
    CA-->>H: current/open phases

    alt No open phase or no mapped phase config
      H-->>C: Skip message
    else One or more phase configs are mapped
      alt Tester compilationStatus != SUCCESS
        H-->>C: Throw (retry/DLQ path)
      else Tester ready
        loop Once per matching phase config
          H->>ECS: launchScorerTask(configId, submissionId, phaseConfig)
          ECS->>F: RunTask with env overrides
          F->>MM: GET /challenge/:id
          F->>MM: GET /challenge/:id/tester-jar
          F->>MM: GET /testers/:testerId
          F->>SA: Download submission artifacts
          F->>F: Load tester JAR + generic MarathonController execution
          F->>MM: POST /internal/scoring-results
          MM->>SRS: processScoringResult(payload)
          SRS->>RA: POST/PUT review summations
          Note over SRS,RA: When relative scoring is enabled and testScores metadata is present,\nScoringResultService recomputes latest-submission aggregates before persisting them.
          F-->>ECS: Task exits
        end
        H-->>C: Success
      end
    end
  end

  C->>C: Commit offset on success/skip
  Note over C: On failures retries with exponential backoff. If DLQ is enabled and retries are exhausted, publish to topic.dlq and commit.

SYSTEM review scoring uses the same scorer pipeline after autopilot dispatches:

POST /v6/marathon-match/internal/system-score
ECS scorer task execution
POST /v6/marathon-match/internal/scoring-progress
POST /v6/marathon-match/internal/scoring-results

Review phase scoring flow

See Review Phase Scoring for the end-to-end review-phase sequence from review creation through challenge completion.

Name		Name	Last commit message	Last commit date
Latest commit History 194 Commits
.circleci		.circleci
docs		docs
ecs-runner		ecs-runner
examples		examples
prisma		prisma
scripts		scripts
src		src
.env.example		.env.example
.env.sample		.env.sample
.gitignore		.gitignore
.nvmrc		.nvmrc
.prettierrc		.prettierrc
Dockerfile		Dockerfile
ECS_RUNNER_LIFETIME.md		ECS_RUNNER_LIFETIME.md
LICENSE		LICENSE
README.md		README.md
SetupExample.md		SetupExample.md
appStartUp.sh		appStartUp.sh
build.sh		build.sh
docker-compose.yml		docker-compose.yml
eslint.config.mjs		eslint.config.mjs
nest-cli.json		nest-cli.json
package.json		package.json
pnpm-lock.yaml		pnpm-lock.yaml
prisma.config.ts		prisma.config.ts
tsconfig.build.json		tsconfig.build.json
tsconfig.json		tsconfig.json

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marathon-match-api-v6

Service base path

Documentation

Configuration values

Core service and database

JWT auth and M2M auth

Kafka consumer/producer

Scoring completion email notifications

Marathon scoring integration

ECS launch configuration

ECS runner task environment (injected at launch)

Submission isolation inside the ECS runner

Exit code 137 (OOM) mitigation

Endpoints and auth

Public endpoints

Tester endpoints

Marathon match config endpoints

Submission runner log endpoint

Internal scoring callback endpoint

How to set up a challenge for marathon match scoring

1. Create a tester

2. Wait for compilation success

3. Create challenge config

4. Ensure scorer infrastructure is configured

5. Optional verification calls

ECS runner image (ECR)

Submission scoring flow (Kafka to score)

Review phase scoring flow

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