wsy-sheng opened a new issue, #14407:
URL: https://github.com/apache/iotdb/issues/14407
When run the code below in Java, the memory in the old generation isn't GC
in time, which eventually leads to the data node crashing.
### 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:
<img width="708" alt="gc"
src="https://github.com/user-attachments/assets/942b3624-baaa-4c46-ba7d-e9f3788b7d72";
/>
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