fangpei created HAWQ-1494:
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Summary: The bug can appear every time when I execute a specific
sql: Unexpect internal error (setref.c:298), server closed the connection
unexpectedly
Key: HAWQ-1494
URL: https://issues.apache.org/jira/browse/HAWQ-1494
Project: Apache HAWQ
Issue Type: Bug
Components: Core
Reporter: fangpei
Assignee: Radar Lei
Fix For: 2.2.0.0-incubating
When I execute a specific sql, a serious bug can happen every time. (Hawq
version is 2.2.0.0)
BUG information:
FATAL: Unexpect internal error (setref.c:298)
DETAIL: AssertImply failed("!(!var->varattno >= 0) || (var->varattno <=
list_length(colNames) + list_length(rte- >pseudocols)))", File: "setrefs.c",
Line: 298)
HINT: Process 239600 will wait for gp_debug_linger=120 seconds before
termination.
Note that its locks and other resources will not be released until then.
server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
The connection to the server was lost. Attemping reset: Succeeded.
I use GDB to debug, the GDB information is the same every time. The information
is:
Loaded symbols for /lib64/libnss_files.so.2
0x00000032dd40eb5c in recv 0 from /lib64/libpthread.so.0
(gdb) b setrefs.c:298
Breakpoint 1 at 0x846063: file setrefs.c, line 298.
(gdb) c
Continuing.
Breakpoint 1, set_plan_references_output_asserts (glob=0x7fe96fbccab0,
plan=0x7fe8e930adb8) at setrefs.c:298
298 set ref s .c:没有那个文件或目录.
(gdb) c 1923
Will ignore next 1922 crossings of breakpoint 1. Continuing.
Breakpoint 1, set_plan_referencesj〇utput_asserts (glob=0x7fe96fbccab0,
plan=0x7fe869c70340) at setrefs.c:298
298 in setrefs.c
(gdb) p list_length(allVars)
$1 = 1422
(gdb) p var->varno
$2 = 65001
(gdb) p list_length(glob->finalrtable)
$3 = 66515
(gdb) p var->varattno
$4 = 31
(gdb) p list_length(colNames)
$5 = 30
(gdb) p list_length(rte->pseudocols)
$6 = 0
the SQL sentence is long, Occupies the entire screen, total 45 lines. the SQL
sentence contain "nested select", many "union all", "where", "or", "and", and
also have "group by" and "having".
I try to "explain this SQL" to get the execution plan, but it report the same
error, and then can get the execution plan.
I also try to "set optimizer=off" and retry the SQL sentence, but the same
error happen, and "show optimizer" the optimizer is "on" (automatically set
"on").
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