shenyu: [BUG]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

memory leaked

Expected Behavior

when i use System.gc(), no memory leaked

Steps To Reproduce

public class TestMemoryLeak { // 1m内存 private static final int M_1 = 1 * 1024 * 1024;

public static void main(String[] args) throws InterruptedException, IOException {
    System.in.read();
    try {
        mswtMapTest();
    } catch (Exception e) {
        e.printStackTrace();
    }
    System.gc();
    TimeUnit.SECONDS.sleep(Long.MAX_VALUE);
}

public static void mswtMapTest() {
    for (int i = 0; i < 10; i++) {
        System.gc();
        MemorySafeWindowTinyLFUMap<String, Byte[]> map = new MemorySafeWindowTinyLFUMap<>(1, 100);
        map.put(String.valueOf(i), new Byte[M_1 * 2]);
        // 手动GC
    }
}

public static void commonMapTest() {
    for (int i = 0; i < 10; i++) {
        System.gc();
        Map<String, Byte[]> map = new HashMap<>();
        map.put(String.valueOf(i), new Byte[M_1 * 2]);
        // 手动GC
        System.gc();
    }
}

}

Environment

jvm： -Xms20m -Xmx20m

ShenYu version(s):

Debug logs

Exception in thread “main” java.lang.OutOfMemoryError: Java heap space at org.apache.shenyu.common.cache.TestMemoryLeak.mswtMapTest(TestMemoryLeak.java:44) at org.apache.shenyu.common.cache.TestMemoryLeak.main(TestMemoryLeak.java:32)

Anything else?

MemorySafeWindowTinyLFUMap hold a static reference ALL, every reference of MemorySafeWindowTinyLFUMap will be always hold by the reference, and may cause a memory leak