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Sep 24, 2026 · Backend Development

JDK 25 G1GC Bug Steals Pinned Objects: Silent Data Corruption in Production

Ctrip's JDK 25 upgrade revealed a silent data corruption bug in G1GC's Optional Evacuation phase, where pinned objects used by JNI critical sections (e.g., zstd-jni) were incorrectly moved, corrupting Parquet/ORC files without write-time errors; root cause traced to commit 86cec4ea and fixed via backport JDK-8377811.