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core Errors when predict online from the xgboost model with java api #163
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Can you post an example script? |
Strangely, core dump happens occasionally,This is core dump gdb information: (gdb) where Corresponding to my debugging code:118 96 template |
I have no idea why this is happening. Can you upload your Java application here so that I can try running it? |
This core problem has been bothering me for a long time , it only occurs when handle lots of requests at the same time ,I'm afraid you can't reproduce it,Here is the core code: import java.nio.charset.StandardCharsets; import com.gaode.idccmnpredict.pb.FeatureOuterClass; @slf4j
} class FeatureCacheItem {
} |
I wonder if some |
This is also a point for me to consider. Maybe it's jni problem? |
Yes, that's it. C++ is using the CSRBatch object, occasionally SparseBatch has been garbaged by JVM. At first, I wonder if it's problem with this code: Thanks. |
The issue is that |
In #196, I created a separate data matrix class ( |
|
Here is the GDB information:
gdb /opt/taobao/java/bin/java --core=core-616-java-3489-1584598903
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/opt/taobao/java/bin/java -server -Xms2g -Xmx2g -Xmn1g -XX:MetaspaceSize=256m -'.
Program terminated with signal 6, Aborted.
#0 0x00007f9f7cf27277 in raise () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install ali-jdk-8.4.8-1574344.alios7.x86_64
(gdb) bt
#0 0x00007f9f7cf27277 in raise () from /lib64/libc.so.6
#1 0x00007f9f7cf28968 in abort () from /lib64/libc.so.6
#2 0x00007f9f7c81ffd5 in os::abort(bool) () from /opt/taobao/install/ajdk-8.4.8-b211/jre/lib/amd64/server/libjvm.so
#3 0x00007f9f7c9ddce3 in VMError::report_and_die() () from /opt/taobao/install/ajdk-8.4.8-b211/jre/lib/amd64/server/libjvm.so
#4 0x00007f9f7c825c32 in JVM_handle_linux_signal () from /opt/taobao/install/ajdk-8.4.8-b211/jre/lib/amd64/server/libjvm.so
#5 0x00007f9f7c81bd13 in signalHandler(int, siginfo*, void*) () from /opt/taobao/install/ajdk-8.4.8-b211/jre/lib/amd64/server/libjvm.so
#6
#7 0x00007f9e0cbba448 in unsigned long (anonymous namespace)::PredictBatch_treelite::CSRBatch(treelite::CSRBatch const*, bool, unsigned long, unsigned long, void*, unsigned long, unsigned long, unsigned long, float*) [clone .isra.217] ()
from /tmp/libtreelite4j9026278753296637105.so
#8 0x00007f9e0cbc6f71 in unsigned long treelite::Predictor::PredictBatchBase_treelite::CSRBatch(treelite::CSRBatch const*, int, bool, float*) () from /tmp/libtreelite4j9026278753296637105.so
#9 0x00007f9e0cbcbb75 in TreelitePredictorPredictBatch () from /tmp/libtreelite4j9026278753296637105.so
#10 0x00007f9e0cbb4caa in Java_ml_dmlc_treelite4j_TreeliteJNI_TreelitePredictorPredictBatch ()
from /tmp/libtreelite4j9026278753296637105.so
#11 0x00007f9f6733f79f in ?? ()
#12 0x0000000000000000 in ?? ()
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