15 engineers on Hacker News describe using OpenJDK first-hand: 7 endorse it, 4 regret it, 1 are mixed.
“Azul and OpenJDK's approaches helped - but it is quite intrusive (you need a profiling run)”
mixed · production · switchbak · 2026-10-29 · source ↗ · wrong label?“it ran passably in OpenJDK, whereas running with the Oracle JDK resulted in an order of magnitude worse performance”
endorse · production · KronisLV · 2025-04-01 · source ↗ · wrong label?“development is done on OpenJDK until we hit some mysterious problem. The problem then disappeared when we switched to Oracle JDK.”
regret · production · oriolid · 2022-04-15 · source ↗ · wrong label?“we've migrated to OpenJDK binaries maintained by Red Hat and Azul (depending on OS)”
endorse · production · nullwasamistake · 2019-06-11 · source ↗ · wrong label?“Today a colleague was investigating a Segmentation fault in the JVM because we moved to the OpenJDK.”
regret · production · papaf · 2019-05-10 · source ↗ · wrong label?“We've been using OpenJDK in production since Java 7 without issue.”
endorse · production · nicktelford · 2018-11-14 · source ↗ · wrong label?“Used OpenJDK in production for years. Never seen any issues or bugs.”
endorse · production · rjkennedy98 · 2018-11-14 · source ↗ · wrong label?“On ARM openjdk has a lot of issues while oracle jdk/jre runs smoothly. Many apps will just crash under openjdk”
regret · production · tluyben2 · 2018-09-26 · source ↗ · wrong label?“We switched from the Oracle JDK to OpenJDK a couple of months back and it's going fine.”
endorse · production · caboteria · 2016-03-10 · source ↗ · wrong label?“They all run OpenJDK on them and infrastructure items such as memcached, Postgres, couple of MQ solutions.”
endorse · production · meaty · 2012-12-08 · source ↗ · wrong label?“early versions of ClojureScript had a critical bug on the OpenJDK that gave me the impression that (many of) the core developers are using the Sun package”
regret · personal · fmw · 2011-08-27 · source ↗ · wrong label?“We've been using openjdk 7 in production for quite a while now with no problems.”
endorse · production · nvarsj · 2011-07-29 · source ↗ · wrong label?“Where it's needed, an OpenJDK distribution is used.”
neutral · production · thedougd · 2025-12-12 · source ↗ · wrong label?“OpenJDK 1.8 is (finally) back, and with Swing support even”
neutral · personal · waddlesplash · 2018-12-02 · source ↗ · wrong label?“they are in the same class for a short-running Clojure app dominated by startup times”
neutral · production · kimi · 2017-09-17 · source ↗ · wrong label?