× 22nd Sept 2021 Eclipse Temurin 17 GA initial platforms are available!
You can track progress of additional platforms.

Adoptium Frequently Asked Questions

We are currently working through our first release of Eclipse Temurin and will be updating this FAQ as and when things are completed and available. If you want to talk to us or ask additional questions the best place is our slack instance or via an issue in the support channel if your question is not covered by one of the entries below.

Most of the Eclipse Temurin builds with HotSpot for 8u302-b08, 11.0.12+7 and 16.0.2+7 are now available. Some builds are not yet ready but we are working hard to get them ready. You can follow progress via that table in adoptium#68 for the current status of each platform/version combination.

Unlike some of the releases which were performed at AdoptOpenJDK the team is performing additional testing with brand new infrastructure in order to be able to release TCK-compatible JDKs which means it is taking longer than usual to complete the release cycle. We are unable to release on any individual platform/version combination until this is complete. Please bear with us - we are working very hard behind the scenes to make this happen and the experiences we have gained should make the process much quicker on future cycles.

Short answer: The project got so big that we chose to move under the Eclipse Foundation as announced last year to provide us some additional stability for the future!

Longer answer: The builds you know as AdoptOpenJDK are now "Eclipse Temurin by Adoptium" (release blog post) Don't worry though - despite the branding changes it is the same open build processes, AQAvit test suites and primarily the same team producing them as before, but there are more larger companies now involved in the working group.

This is the project and brand name for the binaries that the Eclipse Foundation produces. You can think of these as the successor binaries to AdoptOpenJDK. However, it is important to note that these binaries are just one of many that will eventually be in the Eclipse Adoptium Marketplace. While we appreciate that the Adoptium/Temurin name split is more confusing that just “Adoptium”, this is similar to how other vendors brand their binaries, e.g. Amazon has Corretto, Azul has Zulu (and others). The “Adoptium” project and working group will deal with more than just Temurin so the distinction is important to maintain.

We have already released most of the JREs for JDK8 but naturally prioritised the full JDKs before doing those. For JDK11+ we would generally recommend using jlink (see the upstream openjdk changes to stop building JREs by default) but despite that statement we are currently aiming to release them for 11 as well for continuity. We do not plan to do so for JDK16 and above. See this issue for discussion on the topic.

The transition to Adoptium means we have unfortunately not been able to continue to distribute builds of Eclipse OpenJ9. IBM has now taken them over and they are now available as "IBM Semeru". There is no need to be concerned about the change - it is still free.

Due to the limited amount of people we have working on the project, maintaining the wide variety of docker images that we provided from AdoptOpenJDK was becoming unsustainable. For that reason we are releasing a cut down set of docker images for Temurin. For those users who want a containerised Linux distribution that we don't provide an image for, use this guide.

We are working on a solution for that at the moment with this issue as an umbrella for the work

This topic is something that has generated a bit of conversation recently. We are currently considering our option but are leaning towards headless musl-based builds for the JDK17 LTS release. If you want to provide any input to that decision-making process, please get involved in containers#1

There is a new download API provided by Adoptium for downloading Eclipse Temurin builds.

The good news is that it looks very like the AdoptOpenJDK one did so migration isn't too difficult for anyone currently using it. At present the AdoptOpenJDK API will redirect to Temurin (or Semeru) if available when you request the latest release builds. We have done this because we haven't had time to encourage the community to fully migrate and because we haven't released everything yet so there are missing builds in the Adoptium API. Note that this will be a temporary measure and the AdoptOpenJDK API is not expected to be retained forever to do this although the timescale for removing the redirection is still to be decided.

The people involved in the project are passionate about promoting it and we are keen to find ways to promote the work we do at Adoptium and with the Temurin binaries so feel free to get in touch with us if you have a forum you wish us to participate in and we will see what we can do. In general contacting the team via Slack is the best way to engage with us.

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