the memory in the old generation isn't GC in time, with code sessionPool.showPathsTemplateSetOn

[wsy-sheng]

When run the code below, the memory in the old generation isn't GC in time, which eventually leads to the data node crashing.

Version
version: 1.3.2

log :

A fatal error has been detected by the Java Runtime Environment:
Internal Error (debug.cpp:362), pid=32562, tid=88579
fatal error: OutOfMemory encountered: Java heap space

JRE version: OpenJDK Runtime Environment Corretto-17.0.11.9.1 (17.0.11+9) (build 17.0.11+9-LTS)
Java VM: OpenJDK 64-Bit Server VM Corretto-17.0.11.9.1 (17.0.11+9-LTS, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, bsd-aarch64)

--------------- S U M M A R Y ------------

Command Line: --add-opens=java.base/java.util.concurrent=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.nio=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED -Dlogback.configurationFile=./sbin/../conf/logback-datanode.xml -DIOTDB_HOME=./sbin/.. -DIOTDB_DATA_HOME=./sbin/.. -DTSFILE_HOME=./sbin/.. -DIOTDB_CONF=./sbin/../conf -DTSFILE_CONF=./sbin/../conf -Dname=iotdb.IoTDB -DIOTDB_LOG_DIR=./sbin/../logs -DOFF_HEAP_MEMORY=1232M -Diotdb.jmx.local=true -Xms4912M -Xmx4912M -XX:MaxDirectMemorySize=1232M -Djdk.nio.maxCachedBufferSize=1291845 -XX:+CrashOnOutOfMemoryError -XX:+UseAdaptiveSizePolicy -Xss512k -XX:SafepointTimeoutDelay=1000 -XX:+SafepointTimeout org.apache.iotdb.db.service.DataNode -s

Host: "Mac14,7" arm64, 8 cores, 16G, Darwin 23.4.0, macOS 14.4 (23E214)
Time: Thu Dec 12 22:29:33 2024 CST elapsed time: 33.258095 seconds (0d 0h 0m 33s)

code:

public class SessionPoolDemo {

private static SessionPool sessionPool;
    private static void constructCustomSessionPool() {
        sessionPool = new SessionPool.Builder()
                        .host("127.0.0.1")
                        .port(6667)
                        .user("root")
                        .password("root")
                        .build();
    }

    public static void main(String[] args) throws Exception {
        constructCustomSessionPool();

        for (int i = 0; i < 1000; i++) { // or 5000
            List<String> locationTemplate = sessionPool.showPathsTemplateSetOn("locationTemplate");
            System.out.println(locationTemplate.size());
        }
    }
}

GC:

[github-actions]

Hi, this is your first issue in IoTDB project. Thanks for your report. Welcome to join the community!