Details
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Bug
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Status: Resolved
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Major
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Resolution: Fixed
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Impala 1.4
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None
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None
Description
I see this ~80% of the time.
Table (10,000 rows, all distinct values for non boolean columns):
+----------------+----------------+---------+ | name | type | comment | +----------------+----------------+---------+ | string_col_1 | string | | | boolean_col_2 | boolean | | | smallint_col_3 | smallint | | | float_col_4 | decimal(16,8) | | | float_col_5 | decimal(16,8) | | | double_col_6 | decimal(32,16) | | +----------------+----------------+---------+
This query makes it fail (any comparison operator will trigger it): select count
where float_col_4
double_col_6;
Note that I am reliably able to run counts and scans over the individual columns. Additionally, this only happens when the Decimal types have different scale and precision.
impalad-error-log.txt
F0509 14:17:30.293581 32414 decimal-operators.cc:270] Check failed: e->GetNumChildren() == 2 (1 vs. 2)
*** Check failure stack trace: ***
@ 0x1db33dd google::LogMessage::Fail()
@ 0x1db5b7f google::LogMessage::SendToLog()
@ 0x1db2fcb google::LogMessage::Flush()
@ 0x1db640d google::LogMessageFatal::~LogMessageFatal()
@ 0x10d4b9f impala::DecimalOperators::RoundDecimalNegativeScale()
@ 0x10d5087 impala::DecimalOperators::RoundDecimal()
@ 0x10d54ae impala::DecimalOperators::Cast_decimal_decimal()
@ 0xde065f impala::Expr::GetValue()
@ 0x10d8407 impala::DecimalOperators::Gt_decimal_decimal()
@ 0xde065f impala::Expr::GetValue()
@ 0x124ff8f impala::ExecNode::EvalConjuncts()
@ 0x1310f23 impala::HdfsScanner::WriteCompleteTuple()
@ 0x1313b61 impala::HdfsScanner::WriteAlignedTuples()
@ 0x12a31fe impala::HdfsTextScanner::WriteFields()
@ 0x12a1d75 impala::HdfsTextScanner::ProcessRange()
@ 0x12a0a3c impala::HdfsTextScanner::ProcessSplit()
@ 0x126a67b impala::HdfsScanNode::ScannerThread()
@ 0x127e162 boost::_mfi::mf0<>::operator()()
@ 0x127d8a6 boost::_bi::list1<>::operator()<>()
@ 0x127c6b1 boost::_bi::bind_t<>::operator()()
@ 0x127b0d5 boost::detail::function::void_function_obj_invoker0<>::invoke()
@ 0xe3a75a boost::function0<>::operator()()
@ 0x100f5dc impala::Thread::SuperviseThread()
@ 0x101715c boost::_bi::list4<>::operator()<>()
@ 0x10170a5 boost::_bi::bind_t<>::operator()()
@ 0x1017038 boost::detail::thread_data<>::run()
@ 0x7f6af6398ce9 (unknown)
@ 0x7f6af6176e9a start_thread
@ 0x7f6af40bd3fd (unknown)