Balazs Jeszenszky created IMPALA-6435:
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Summary: Codegen crash when UNIONing CHAR(n) literals
Key: IMPALA-6435
URL: https://issues.apache.org/jira/browse/IMPALA-6435
Project: IMPALA
Issue Type: Bug
Reporter: Balazs Jeszenszky
A simple repro:
{code:java}
create table test (c1 int);
select cast ('a' as char(30)) as m from test
union all
select cast ('a' as char(30)) as m from test
;
{code}
Stack trace:
{code:java}
#0 0x00007fb0085275e5 in raise () from /lib64/libc.so.6
#1 0x00007fb008528dc5 in abort () from /lib64/libc.so.6
#2 0x00007fb00a663a55 in os::abort(bool) () from
/usr/java/jdk1.7.0_67-cloudera/jre/lib/amd64/server/libjvm.so
#3 0x00007fb00a7e3f87 in VMError::report_and_die() ()
from /usr/java/jdk1.7.0_67-cloudera/jre/lib/amd64/server/libjvm.so
#4 0x00007fb00a66896f in JVM_handle_linux_signal ()
from /usr/java/jdk1.7.0_67-cloudera/jre/lib/amd64/server/libjvm.so
#5 <signal handler called>
#6 0x0000000001a9042d in llvm::FunctionType::get(llvm::Type*,
llvm::ArrayRef<llvm::Type*>, bool) ()
#7 0x0000000000c2b62f in
impala::LlvmCodeGen::FnPrototype::GeneratePrototype(impala::LlvmBuilder*,
llvm::Value**, bool) ()
#8 0x0000000000846617 in
impala::Expr::CreateIrFunctionPrototype(impala::LlvmCodeGen*,
std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&,
llvm::Value* (*) [2]) ()
#9 0x000000000085960c in
impala::Literal::GetCodegendComputeFn(impala::LlvmCodeGen*, llvm::Function**) ()
#10 0x0000000000a78467 in
impala::Tuple::CodegenMaterializeExprs(impala::LlvmCodeGen*, bool,
impala::TupleDescriptor const&, std::vector<impala::ExprContext*,
std::allocator<impala::ExprContext*> > const&, bool, llvm::Function**) ()
#11 0x0000000000d11df8 in impala::UnionNode::Codegen(impala::RuntimeState*) ()
#12 0x0000000000a7dd4e in impala::FragmentInstanceState::Prepare() ()
#13 0x0000000000a7e311 in impala::FragmentInstanceState::Exec() ()
#14 0x0000000000a6a2f6 in
impala::QueryState::ExecFInstance(impala::FragmentInstanceState*) ()
{code}
A debug build will fail a bit differently, hitting the DCHECK in
codegen-anyval.cc.
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