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https://issues.apache.org/jira/browse/HDFS-12494?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
John Zhuge reassigned HDFS-12494:
---------------------------------
Assignee: John Zhuge
> libhdfs SIGSEGV in setTLSExceptionStrings
> -----------------------------------------
>
> Key: HDFS-12494
> URL: https://issues.apache.org/jira/browse/HDFS-12494
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: libhdfs
> Affects Versions: 3.0.0-alpha4
> Reporter: John Zhuge
> Assignee: John Zhuge
>
> libhdfs application crashes when CLASSPATH is set but not set properly. It
> uses wildcard in this case.
> {noformat}
> $ export CLASSPATH=$(hadoop classpath)
> $ pwd
> /Users/jzhuge/hadoop2/hadoop-hdfs-project/hadoop-hdfs/target/native
> $ ./test_libhdfs_ops
> #
> # A fatal error has been detected by the Java Runtime Environment:
> #
> # SIGSEGV (0xb) at pc=0x00000001052968f7, pid=14147, tid=775
> #
> # JRE version: Java(TM) SE Runtime Environment (7.0_79-b15) (build
> 1.7.0_79-b15)
> # Java VM: Java HotSpot(TM) 64-Bit Server VM (24.79-b02 mixed mode bsd-amd64
> compressed oops)
> # Problematic frame:
> # C [libhdfs.0.0.0.dylib+0x38f7] setTLSExceptionStrings+0x47
> #
> # Core dump written. Default location: /cores/core or core.14147
> #
> # An error report file with more information is saved as:
> #
> /Users/jzhuge/hadoop2/hadoop-hdfs-project/hadoop-hdfs/target/native/hs_err_pid14147.log
> #
> #
> # If you would like to submit a bug report, please visit:
> # http://bugreport.java.com/bugreport/crash.jsp
> # The crash happened outside the Java Virtual Machine in native code.
> # See problematic frame for where to report the bug.
> #
> Abort trap: 6 (core dumped)
> [jzhuge@jzhuge-MBP native]((be32925fff5...) *+)$ lldb -c /cores/core.14147
> (lldb) target create --core "/cores/core.14147"
> warning: (x86_64) /cores/core.14147 load command 549 LC_SEGMENT_64 has a
> fileoff + filesize (0x14627f000) that extends beyond the end of the file
> (0x14627e000), the segment will be truncated to match
> warning: (x86_64) /cores/core.14147 load command 550 LC_SEGMENT_64 has a
> fileoff (0x14627f000) that extends beyond the end of the file (0x14627e000),
> ignoring this section
> Core file '/cores/core.14147' (x86_64) was loaded.
> (lldb) bt
> * thread #1, stop reason = signal SIGSTOP
> * frame #0: 0x00007fffcf89ad42 libsystem_kernel.dylib`__pthread_kill + 10
> frame #1: 0x00007fffcf988457 libsystem_pthread.dylib`pthread_kill + 90
> frame #2: 0x00007fffcf800420 libsystem_c.dylib`abort + 129
> frame #3: 0x00000001056cd5fb libjvm.dylib`os::abort(bool) + 25
> frame #4: 0x00000001057d98fc libjvm.dylib`VMError::report_and_die() + 2308
> frame #5: 0x00000001056cefb5 libjvm.dylib`JVM_handle_bsd_signal + 1083
> frame #6: 0x00007fffcf97bb3a libsystem_platform.dylib`_sigtramp + 26
> frame #7: 0x00000001052968f8
> libhdfs.0.0.0.dylib`setTLSExceptionStrings(rootCause=0x0000000000000000,
> stackTrace=0x0000000000000000) at jni_helper.c:589 [opt]
> frame #8: 0x00000001052954f0
> libhdfs.0.0.0.dylib`printExceptionAndFreeV(env=0x00007ffaff0019e8,
> exc=0x00007ffafec04140, noPrintFlags=<unavailable>, fmt="loadFileSystems",
> ap=<unavailable>) at exception.c:183 [opt]
> frame #9: 0x00000001052956bb
> libhdfs.0.0.0.dylib`printExceptionAndFree(env=<unavailable>,
> exc=<unavailable>, noPrintFlags=<unavailable>, fmt=<unavailable>) at
> exception.c:213 [opt]
> frame #10: 0x00000001052967f4 libhdfs.0.0.0.dylib`getJNIEnv [inlined]
> getGlobalJNIEnv at jni_helper.c:463 [opt]
> frame #11: 0x000000010529664f libhdfs.0.0.0.dylib`getJNIEnv at
> jni_helper.c:528 [opt]
> frame #12: 0x00000001052975eb
> libhdfs.0.0.0.dylib`hdfsBuilderConnect(bld=0x00007ffafed00000) at hdfs.c:693
> [opt]
> frame #13: 0x000000010528be30 test_libhdfs_ops`main(argc=<unavailable>,
> argv=<unavailable>) at test_libhdfs_ops.c:91 [opt]
> frame #14: 0x00007fffcf76c235 libdyld.dylib`start + 1
> (lldb) f 10
> libhdfs.0.0.0.dylib was compiled with optimization - stepping may behave
> oddly; variables may not be available.
> frame #10: 0x00000001052967f4 libhdfs.0.0.0.dylib`getJNIEnv [inlined]
> getGlobalJNIEnv at jni_helper.c:463 [opt]
> 460 "org/apache/hadoop/fs/FileSystem",
> 461 "loadFileSystems", "()V");
> 462 if (jthr) {
> -> 463 printExceptionAndFree(env, jthr, PRINT_EXC_ALL,
> "loadFileSystems");
> 464 }
> 465 }
> 466 else {
> (lldb) f 7
> frame #7: 0x00000001052968f8
> libhdfs.0.0.0.dylib`setTLSExceptionStrings(rootCause=0x0000000000000000,
> stackTrace=0x0000000000000000) at jni_helper.c:589 [opt]
> 586 mutexUnlock(&jvmMutex);
> 587 }
> 588
> -> 589 free(state->lastExceptionRootCause);
> 590 free(state->lastExceptionStackTrace);
> 591 state->lastExceptionRootCause = (char*)rootCause;
> 592 state->lastExceptionStackTrace = (char*)stackTrace;
> (lldb) p state
> (ThreadLocalState *) $0 = 0x0000000000000000
> {noformat}
> The correct way to set CLASSPATH is because libhdfs does not support wildcard
> in CLASSPATH:
> {noformat}
> $ export CLASSPATH=$(hadoop classpath --glob)
> {noformat}
> Filed HDFS-12491 Support wildcard in CLASSPATH for libhdfs.
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