[IMPALA-4285] Parquet scanner with MT_DOP > 0 crashes when materializing no slots.

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: Impala 2.8.0
• Fix Version/s: Impala 2.8.0
• Component/s: Backend
• Labels: multithreading
• Target Version: Impala 2.8.0
• Assignee: Alexander Behm
• Reporter: Alexander Behm
• Created: 12/Oct/16 19:13
• Updated: 22/Oct/16 21:34
• Resolved: 22/Oct/16 21:34

Description

Repro:

set mt_dop=1;
compute stats compute stats functional_parquet.alltypes

Stack:

#0  0x00007fd1ac08b425 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fd1ac08eb8b in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fd1ae1daac5 in os::abort(bool) () from /home/abehm/jdk1.7.0_25/jre/lib/amd64/server/libjvm.so
#3  0x00007fd1ae33a137 in VMError::report_and_die() () from /home/abehm/jdk1.7.0_25/jre/lib/amd64/server/libjvm.so
#4  0x00007fd1ae1de5e0 in JVM_handle_linux_signal () from /home/abehm/jdk1.7.0_25/jre/lib/amd64/server/libjvm.so
#5  <signal handler called>
#6  0x0000000001641264 in impala::RowBatch::row_byte_size (this=0x0) at /home/abehm/impala/be/src/runtime/row-batch.h:201
#7  0x000000000167a3e5 in impala::HdfsScanner::next_row (this=0xb16cd00, r=0xc240000)
    at /home/abehm/impala/be/src/exec/hdfs-scanner.h:467
#8  0x00000000017b21a4 in impala::HdfsScanner::WriteEmptyTuples (this=0xb16cd00, context=0xa038f80, row=0xc240000, num_tuples=300)
    at /home/abehm/impala/be/src/exec/hdfs-scanner.cc:269
#9  0x000000000169ecf5 in impala::HdfsParquetScanner::GetNextInternal (this=0xb16cd00, row_batch=0xb231320)
    at /home/abehm/impala/be/src/exec/hdfs-parquet-scanner.cc:342
#10 0x0000000001674c47 in impala::HdfsScanner::GetNext (this=0xb16cd00, row_batch=0xb231320)
    at /home/abehm/impala/be/src/exec/hdfs-scanner.h:132
#11 0x0000000001674605 in impala::HdfsScanNodeMt::GetNext (this=0xc52cf00, state=0xb0fe900, row_batch=0xb231320, eos=0x97ef949)
    at /home/abehm/impala/be/src/exec/hdfs-scan-node-mt.cc:93
#12 0x0000000001718657 in impala::PartitionedAggregationNode::GetRowsStreaming (this=0x97ef680, state=0xb0fe900, out_batch=0xb233ba0)
    at /home/abehm/impala/be/src/exec/partitioned-aggregation-node.cc:549
#13 0x00000000017166e1 in impala::PartitionedAggregationNode::GetNextInternal (this=0x97ef680, state=0xb0fe900, row_batch=0xb233ba0, 
    eos=0x7e27cb1) at /home/abehm/impala/be/src/exec/partitioned-aggregation-node.cc:451
#14 0x0000000001715adf in impala::PartitionedAggregationNode::GetNext (this=0x97ef680, state=0xb0fe900, row_batch=0xb233ba0, 
    eos=0x7e27cb1) at /home/abehm/impala/be/src/exec/partitioned-aggregation-node.cc:377
#15 0x000000000198a2ec in impala::PlanFragmentExecutor::OpenInternal (this=0x7e27b88)
    at /home/abehm/impala/be/src/runtime/plan-fragment-executor.cc:309
#16 0x0000000001989d9a in impala::PlanFragmentExecutor::Open (this=0x7e27b88)
    at /home/abehm/impala/be/src/runtime/plan-fragment-executor.cc:274
#17 0x0000000001504dec in impala::FragmentMgr::FragmentExecState::Exec (this=0x7e27800)
    at /home/abehm/impala/be/src/service/fragment-exec-state.cc:58
#18 0x00000000014fc57d in impala::FragmentMgr::FragmentThread (this=0xbf4adc0, fragment_instance_id=...)
    at /home/abehm/impala/be/src/service/fragment-mgr.cc:88
#19 0x0000000001500330 in boost::_mfi::mf1<void, impala::FragmentMgr, impala::TUniqueId>::operator() (this=0xac006f0, p=0xbf4adc0, 
    a1=...) at /home/abehm/impala/toolchain/boost-1.57.0/include/boost/bind/mem_fn_template.hpp:165
#20 0x00000000015000ed in boost::_bi::list2<boost::_bi::value<impala::FragmentMgr*>, boost::_bi::value<impala::TUniqueId> >::operator()<boost::_mfi::mf1<void, impala::FragmentMgr, impala::TUniqueId>, boost::_bi::list0> (this=0xac00700, f=..., a=...)
    at /home/abehm/impala/toolchain/boost-1.57.0/include/boost/bind/bind.hpp:313
#21 0x00000000014ffa17 in boost::_bi::bind_t<void, boost::_mfi::mf1<void, impala::FragmentMgr, impala::TUniqueId>, boost::_bi::list2<boost::_bi::value<impala::FragmentMgr*>, boost::_bi::value<impala::TUniqueId> > >::operator() (this=0xac006f0)
    at /home/abehm/impala/toolchain/boost-1.57.0/include/boost/bind/bind_template.hpp:20
...