Release Notes
0.1.1
Targets
Apache Iceberg
Adds a positional deletes mode for Merge on Read, backed by a per connector local primary key index. Emits V2 positional deletes or V3 deletion vectors, making Merge on Read tables readable from Snowflake and Databricks.
Sources
MongoDB
Snapshot document transform now respects row boundaries to avoid arrow Utf8 i32 offset overflow on collections with large string fields.
0.1.0
2026-05-09
Core
Adds an opt in Prometheus /metrics endpoint alongside existing OTel support. Enable it by setting the PROMETHEUS env variable.
2026-05-08
Targets
Kafka
Batches delivery acks across source transactions to fix replication stalls.
2026-05-06
Sources
MongoDB
BSON strings now infer to numeric and temporal columns. A majority vote across documents picks the dominant type per field.
2026-04-29
Sources
SQL Server
CDC sources recover from stale capture instances mid stream without operator intervention.
Core
The local metrics store that powers the dashboard now uses tiered compaction.
2026-04-22
Core
Redesigned Supermetal UI.
2026-04-06
Targets
Apache Iceberg
Writes Parquet directly to Iceberg tables via REST, AWS Glue, or S3 Tables catalogs over S3 or GCS storage. Defaults to Iceberg V3 with variant, with V2 fallback. Two write modes are available. Merge on Read uses equality or positional deletes. Append works with any Iceberg engine. Read the launch post.
2026-04-05
Sources
MySQL
Adds binlog file and position CDC mode alongside the existing GTID mode.
2026-04-02
Sources
SQL Server
Detects and switches to new capture instances as they become available, picking up schema changes without operator intervention.
2026-03-18
Sources
File
Ingests files from S3, GCS, Azure Blob, R2, and local filesystems. Detects format and compression from the file extension. Infers CSV dialect and column types. Streams every file without local disk and without a file size cap. Incremental syncs process only changed files. Maps to tables by single table, filename, or path regex.
MongoDB
Adds AWS DocumentDB support.
2026-02-10
Targets
Webhook
Pushes change events to HTTP endpoints in Debezium or Supermetal format. Rows batch into JSON arrays. Bodies compress with gzip, Zstd, or Brotli. Rate limits apply by request count and byte throughput. Deterministic idempotency keys guarantee exactly once delivery.
2026-02-02
Targets
Kafka
Writes to Kafka in Debezium compatible or Supermetal native format. Optional Kafka transactions align with source database transactions for atomic multi topic writes. Read the launch post.
2026-01-29
Targets
PostgreSQL
PostgreSQL target merges resolve unique constraint conflicts on the target.
2026-01-26
Sources
MongoDB
Adds a schemaless mode alongside the existing schema mode.
2025-12-06
Sources
PostgreSQL
Detects primary failovers and recovers by retrying automatically. See high availability.
2025-10-30
Core
Supermetal launched. Read the launch post.
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