Hi,
I'm doing some Optimizer debugging on the latest version of Trafodion.
Today I tried using the DISPLAY gui tool because I wanted to see how a join
query was being optimized.
However, it seems to core no matter what query I try:
(gdb) bt 3
#0 0x00007ffff5117625 in raise () from /lib64/libc.so.6
#1 0x00007ffff5118e05 in abort () from /lib64/libc.so.6
#2 0x00007ffff6ef2165 in ?? ()
from /usr/lib/jvm/java-1.7.0-openjdk.x86_64/jre/lib/amd64/server/libjvm.so
(More stack frames follow...)
(gdb) bt
#0 0x00007ffff5117625 in raise () from /lib64/libc.so.6
#1 0x00007ffff5118e05 in abort () from /lib64/libc.so.6
#2 0x00007ffff6ef2165 in ?? ()
from /usr/lib/jvm/java-1.7.0-openjdk.x86_64/jre/lib/amd64/server/libjvm.so
#3 0x00007ffff706685f in ?? ()
from /usr/lib/jvm/java-1.7.0-openjdk.x86_64/jre/lib/amd64/server/libjvm.so
#4 0x00007ffff7066f2b in ?? ()
from /usr/lib/jvm/java-1.7.0-openjdk.x86_64/jre/lib/amd64/server/libjvm.so
#5 0x00007ffff6ef0e44 in ?? ()
from /usr/lib/jvm/java-1.7.0-openjdk.x86_64/jre/lib/amd64/server/libjvm.so
#6 0x00007ffff6ef6c65 in JVM_handle_linux_signal ()
from /usr/lib/jvm/java-1.7.0-openjdk.x86_64/jre/lib/amd64/server/libjvm.so
#7 <signal handler called>
#8 0x00007ffff6ee87bf in ?? ()
from /usr/lib/jvm/java-1.7.0-openjdk.x86_64/jre/lib/amd64/server/libjvm.so
#9 0x00007ffff7065891 in ?? ()
from /usr/lib/jvm/java-1.7.0-openjdk.x86_64/jre/lib/amd64/server/libjvm.so
#10 0x00007ffff70663cd in ?? ()
from /usr/lib/jvm/java-1.7.0-openjdk.x86_64/jre/lib/amd64/server/libjvm.so
#11 0x00007ffff6ef6d02 in JVM_handle_linux_signal ()
from /usr/lib/jvm/java-1.7.0-openjdk.x86_64/jre/lib/amd64/server/libjvm.so
#12 <signal handler called>
#13 0x00007fffd2eb2d9d in SqldbgSetPointers (memoptr=0x0, tasklist=0x0,
---Type <return> to continue, or q <return> to quit---q
analysisQuit
(gdb) frame 13
#13 0x00007fffd2eb2d9d in SqldbgSetPointers (memoptr=0x0, tasklist=0x0,
analysis=0x7fffd32a9bf8, currentContext=0x7fffe263c090,
ClusterInfo=<value optimized out>) at ExportFunctionSqlCmpDbg.cpp:84
84 CURRSTMT_OPTGLOBALS->memo = (CascadesMemo *) memoptr;
It seems the address CURRSTMT_OPTGLOBALS->memo is zero; we are trying to
dereference a zero pointer.
It's been a month or so since I've played with this tool.
I'm wondering if others are encountering this core also?
Thanks,
Dave
