Why Elasticsearch Stalled: Uncovering Hidden STW Safepoint Issues in an ARM JDK

A detailed investigation of a slow Elasticsearch cluster revealed that massive Stop‑The‑World (STW) safepoint pauses caused by a buggy ARM‑based JDK version were the root cause, and switching to a proper Kona JDK eliminated the frequent ForceSafepoint interruptions and restored performance.

ElasticsearchJVMKona JDK

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Why Elasticsearch Stalled: Uncovering Hidden STW Safepoint Issues in an ARM JDK

Tencent Cloud Developer

Jan 19, 2020 · Backend Development

Tencent Kona JDK: OpenJDK Foundations, Technical Trends, and Big Data Practices

The talk reviews OpenJDK’s evolution, contrasts Oracle JDK, introduces Tencent’s Kona JDK as a free, long‑term, production‑hardened fork optimized for massive micro‑service and big‑data workloads, and discusses emerging Java‑on‑Java, value‑type, Project Panama/Loom, and SIMD Vector API trends shaping JVM performance.

Big DataJVMJava

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Tencent Kona JDK: OpenJDK Foundations, Technical Trends, and Big Data Practices