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From "Kotomi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-14488) libhdfs SIGSEGV during shutdown of Java
Date Mon, 13 May 2019 03:54:00 GMT
Kotomi created HDFS-14488:
-----------------------------

             Summary: libhdfs SIGSEGV during shutdown of Java
                 Key: HDFS-14488
                 URL: https://issues.apache.org/jira/browse/HDFS-14488
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: native
    Affects Versions: 2.7.3
         Environment: Centos 7
gcc (GCC) 8.3.0
            Reporter: Kotomi


For short, it‘s quite similar to https://issues.apache.org/jira/browse/HDFS-13585,but
backtrace is different.

We are using libhdfs for hdfs support in our native library, as a plugin, _dlopen_ when hdfs
path detected and _dlclose_ when application closes.

Crash happens randomly, during shutdown of Java. GDB shows in function hdfsThreadDestructor,
JNIEnv v is not NULL but looks like a wild pointer. Therefore, it crashes when trying to get
JavaVm from its own JNIEnv.
{code:java}
43: ret = (*env)->GetJavaVM(env, &vm);
{code}
Any workarounds? Thx.

Backtrace from core:
{code:java}
#1920 0x00007fac0386da47 in abort () from /usr/lib64/libc.so.6
#1921 0x00007fac0315b769 in os::abort(bool) () from /usr/java/jdk1.8.0_201-amd64/jre/lib/amd64/server/libjvm.so
#1922 0x00007fac03320803 in VMError::report_and_die() () from /usr/java/jdk1.8.0_201-amd64/jre/lib/amd64/server/libjvm.so
#1923 0x00007fac031659f5 in JVM_handle_linux_signal () from /usr/java/jdk1.8.0_201-amd64/jre/lib/amd64/server/libjvm.so
#1924 0x00007fac031588b8 in signalHandler(int, siginfo*, void*) () from /usr/java/jdk1.8.0_201-amd64/jre/lib/amd64/server/libjvm.so
#1925 <signal handler called>
#1926 0x00007fab028f7ef0 in hdfsThreadDestructor (v=0x7fab840919f8) at /home/ambari-qa/hadoop/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/os/posix/thread_local_storage.c:43
#1927 0x00007fac04026bd2 in __nptl_deallocate_tsd () from /usr/lib64/libpthread.so.0
#1928 0x00007fac04026de3 in start_thread () from /usr/lib64/libpthread.so.0
#1929 0x00007fac03933ead in clone () from /usr/lib64/libc.so.6
{code}



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