Hazelcast Jet v4.3 Release Notes
Release Date: 2020-10-20 // over 3 years ago-
- @MohamedMandouh implemented distributed sorting:
BatchStage.sort()
. - @guenter-hesse added a high-throughput source with precisely controlled
🚤 timing, to be used to benchmark Jet's throughput and latency. - 👷 We added the ability for Jet to suspend an unbounded, fault-tolerant job
👻 when it fails due to an exception in the pipeline code. This allows you
🚚 to diagnose the problem, remove its cause, and resume the pipeline without
data loss. - We have improved the consistency of reconnect behaviour across CDC sources and
🔧 introduced a uniform API to configure the reconnect strategy. - We improved the behavior of streaming pipelines based on ingestion time: a
low event rate in any partition of the source used to stall the progress,
now the watermark advances even without events. - 🚚 We moved the
Pipeline
toDAG
transformation from the client to the server,
in preparation for the upcoming feature of preventing event reordering in the
pipeline.
- @MohamedMandouh implemented distributed sorting:
Previous changes from v4.2
-
- 👍 We added Change Data Capture (CDC) support for PostgreSQL and MySql. New
connectors use Debezium to provide a high-level API for processing the
stream of changes from relational databases. A new map sink can be used to
🔀 automatically keep the map in-sync with changes from the database. - We added new source and sink connectors for Elasticsearch 5, 6 and 7
🐎 with support for slicing and co-located reading for maximum read performance
and extended Elasticsearch's client retry mechanism for reliable writing. - 👍 We improved JSON support through a new file source which can read JSON files
📜 directly and also added built-in Jet methods for parsing and mapping JSON strings. - We introduced .relabance() operator which can be used for distributing items
across the cluster. - We made some improvements to Jet startup scripts:
- You can now use the PROMETHEUS_PORT to start Jet with prometheus metrics enabled.
- You can use the jvm.options file to edit the startup JVM parameters.
- You can now use the JET_MODULES environment variable to add modules when using docker
or jet-start script.
- 📚 We did several rounds of improvements to the documentation:
- Improvements to Docker and Kubernetes instructions
- New guidance on Garbage Collector choice and settings
- New and improved tutorials for CDC
- New documentation for Python module and early results support in windowing
- 👍 We added Change Data Capture (CDC) support for PostgreSQL and MySql. New