Apache Apex

Enterprise-grade unified stream and batch processing engine.

Now with event-time windowing and high-level API.

Enterprise Grade

Apex is a Hadoop YARN native platform that unifies stream and batch processing. It processes big data in-motion in a way that is highly scalable, highly performant, fault tolerant, stateful, secure, distributed, and easily operable.

Low Barrier-to-Entry

Write your business logic and leave all operability to the platform. It provides a simple API that enables developers to write or re-use generic Java code, thereby lowering the expertise needed to write big data applications.


The Apex platform comes with Malhar, a library of operators (units of functionality) that can be leveraged to quickly create non-trivial applications. Includes many connectors for messaging systems, databases, files etc.


Apache Apex Core release 3.7.0

Apr 28, 2018. The Apache Apex community is pleased to announce release 3.7.0 of the Core.

Changes: https://github.com/apache/apex-core/blob/v3.7.0/CHANGELOG.md

Apache Apex Malhar Library release 3.8.0

Nov 12, 2017. The Apache Apex community is pleased to announce release 3.8.0 of the Malhar Library.

Changes: https://github.com/apache/apex-malhar/blob/v3.8.0/CHANGELOG.md

Apex at Strata New York

Sep 28, 2017. Exactly once, more than once: Apache Kafka, Heron, and Apache Apex.


Apache Apex Core release 3.6.0

May 04, 2017. The Apache Apex community is pleased to announce release 3.6.0 of the Core.

Changes: https://github.com/apache/apex-core/blob/v3.6.0/CHANGELOG.md

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