# Messages Release Flow

This flow creates a Nessie tag for `lake.db1.messages`, generates a manifest JSON, and appends a row to `lake.db1.releases_v2`.

## Run on lakehouse-core

```bash
ssh niklas@lakehouse-core.rakeroots.lan 'cd /tmp/jecio && ./create-messages-release-via-spark-container.sh'
```

## Custom release name

```bash
ssh niklas@lakehouse-core.rakeroots.lan 'cd /tmp/jecio && ./create-messages-release-via-spark-container.sh rel_2026-02-14_messages-v1'
```

## Outputs

- Manifest file written to `./manifests/<release_name>.json`
- Nessie tag `<release_name>` created at current `main` hash (or reused if already present)
- Registry row appended to `lake.db1.releases_v2`

## Verify

```bash
ssh niklas@lakehouse-core.rakeroots.lan "docker exec spark /opt/spark/bin/spark-sql --properties-file /opt/lakehouse/spark-conf/lakehouse-spark-defaults.conf --packages 'org.apache.iceberg:iceberg-spark-runtime-3.5_2.12:1.10.1,org.apache.iceberg:iceberg-aws-bundle:1.10.1,org.projectnessie.nessie-integrations:nessie-spark-extensions-3.5_2.12:0.104.5' -e \"SELECT release_name, table_identifier, snapshot_id, created_at_utc FROM lake.db1.releases_v2 WHERE table_identifier='lake.db1.messages' ORDER BY created_at_utc DESC LIMIT 10\""
```