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2758838 - IQ MPX: Coordinator hang with locks and s_dbmvbio::EnableRemoteFiles involved

Symptom

  • IQ MPX Coordinator hang. There is no error in IQMSG, and no new connection can be established. IQ needs to be kill -9 around when the customer realized the hang.

  • Stack trace collected by pstack:
Thread 760 (Thread 0x7fd809c4f700 (LWP 17134)):
in __lll_lock_wait
_L_lock_854
pthread_mutex_lock
hos_mutex::Lock
hos_mutex_with_tid::Lock
hos_mutex_with_tid_lock::Lock
hos_mutex_with_tid_lock::hos_mutex_with_tid_lock
s_dbmvbio::EnableRemoteFiles
st_mpxView::MIPCResume
st_mpxHeartbeat::Monitor
hos_daemon::Task
hos_thread::Main
hos_lwtask::Start

Thread 1 (Thread 0x7fdc7d8bf720 (LWP 15715)):
__lll_lock_wait
_L_lock_854
pthread_mutex_lock
st_txnMgr::BeginTransaction
db_BeginTransaction::Execute
st_command::DoCmdThroughResourceGate
in st_iqtxn::BeginTxn
UIQTxn_BeginTxn 
st_SAIQInterfaceInfo::callFunction
st_SAIQInterface::RunIQFunc
st_SAIQInterface::Execute
BeginIQTransaction
saint_iqthresholdtxn::FlushForCommit
ri_commit


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Environment

  • SAP IQ 16.0
  • SAP IQ 16.1

Product

SAP IQ 16.0 ; SAP IQ 16.1

Keywords

no response, unresponsive, can't connect, 813746, CR813746, CR-813746 , KBA , BC-SYB-IQ , Sybase IQ , Problem

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