[jira] [Created] (IMPALA-5876) Segmentation fault in HdfsAvroScanner::MaterializeTuple(impala::AvroSchemaElement const&, impala::MemPool*, unsigned char**, unsigned char*, impala::Tuple*)

["Lars Volker (JIRA)" <ji...@apache.org>]

Lars Volker created IMPALA-5876:
-----------------------------------

             Summary: Segmentation fault in HdfsAvroScanner::MaterializeTuple(impala::AvroSchemaElement const&, impala::MemPool*, unsigned char**, unsigned char*, impala::Tuple*)
                 Key: IMPALA-5876
                 URL: https://issues.apache.org/jira/browse/IMPALA-5876
             Project: IMPALA
          Issue Type: Bug
          Components: Backend
    Affects Versions: Impala 2.10.0
            Reporter: Lars Volker
            Priority: Blocker


This could be a null pointer dereference in [be/src/exec/hdfs-avro-scanner.cc:581|https://github.com/apache/incubator-impala/blob/30129c4535e3505bb203c3f84e2d3da7c73f1117/be/src/exec/hdfs-avro-scanner.cc#L581]:

{code}
    avro_type_t type = element.schema->type;
{code}

Here is the stack trace of the crashing thread from a minidump. Please reach out if you want to access the full minidump. I may also be able to provide a core file.

{noformat}
Crash reason:  SIGSEGV
Crash address: 0x0

 0  impalad!impala::HdfsAvroScanner::MaterializeTuple(impala::AvroSchemaElement const&, impala::MemPool*, unsigned char**, unsigned char*, impala::Tuple*) [hdfs-avro-scanner.cc : 589 + 0x0]
 1  impalad!impala::HdfsAvroScanner::DecodeAvroData(int, impala::MemPool*, unsigned char**, unsigned char*, impala::Tuple*, impala::TupleRow*) [hdfs-avro-scanner-ir.cc : 40 + 0x5]
 2  impalad!impala::HdfsAvroScanner::ProcessRange() [hdfs-avro-scanner.cc : 553 + 0x30]
 3  impalad!impala::BaseSequenceScanner::ProcessSplit() [base-sequence-scanner.cc : 181 + 0xd]
 4  impalad!impala::HdfsScanNode::ProcessSplit(std::vector<impala::FilterContext, std::allocator<impala::FilterContext> > const&, impala::DiskIoMgr::ScanRange*) [hdfs-scan-node.cc : 526 + 0x11]
 5  impalad!impala::HdfsScanNode::ScannerThread() [hdfs-scan-node.cc : 417 + 0x18]
 6  impalad!impala::Thread::SuperviseThread(std::string const&, std::string const&, boost::function<void ()>, impala::Promise<long>*) [function_template.hpp : 767 + 0x7]
 7  impalad!boost::detail::thread_data<boost::_bi::bind_t<void, void (*)(std::string const&, std::string const&, boost::function<void ()>, impala::Promise<long>*), boost::_bi::list4<boost::_bi::value<std::string>, boost::_bi::value<std::string>, boost::_bi::value<boost::function<void ()> >, boost::_bi::value<impala::Promise<long>*> > > >::run() [bind.hpp :      457 + 0x6]
 8  impalad!thread_proxy + 0xda
 9  libpthread-2.12.so + 0x7aa1
10  libc-2.12.so + 0xe893d
{noformat}



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