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2736960 - Intermittent st_server abort CTRL-C throw safeness issue at dfe_FPLOrdinal::TypeCheck – SAP IQ

Symptom

  • IQ multiplex secondary writer node intermittently throws a st_server.cxx abort with a signal 11 host throw at dfe_FPLOrdinal::TypeCheck

 

  • This is a result of CTRL-C throw safeness issue, full stack from the throw point contains these calls…
hos_vector_noerror::ClearAndDestroy()
vp_Heap::~vp_Heap()
opt_BaseTableLeaf::~opt_BaseTableLeaf()
opt_QueryTree::~opt_QueryTree()
opt_QueryExp::~opt_QueryExp
hos_vector_noerror::ClearAndDestroy()
st_cursor::~st_cursor #Nvariant 1()
st_cursorIQtoSA::~st_cursorIQtoSA()
df_dmlcommand::~df_dmlcommand #Nvariant 1()
hos_ObjectStack::Throw()
Throw(const hos_exception&)
hos_attention::_Check
dfe_FPLOrdinal::TypeCheck
df_Evaluable::DepthFirstTypeCheck(df_Heap*)

 

  • Prior to the aborting stack , these messages are also seen in the iqmsg file
GB vertical check - GroupBy column is not dfe_Column or is dfe_FPLOrdinal
Exception Thrown from dflib/dfe_BaseColumn.cxx
Err#: 0, ErrID: 519 (hos_attnexception); SQLCode: -299, SQLState: '57014', Severity: 16
Statement interrupted by user


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Environment

  • SAP IQ 16.1

NOTE: to date this has only been reported on Unix platforms and only in secondary nodes of a multiplex configuration.

Product

SAP IQ 16.1

Keywords

sybase, crash, failed, sig11, CR814633, CR#814633, 814633, IQ161, mpx, ctrlc, cntrl-c, cntrlc, 'ctrl c', query, terminated, stacktrace, dfe_FPLOrdinal , KBA , BC-SYB-IQ , Sybase IQ , Problem

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