[IMPALA-5812] Query hits NullPointerException in FE

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Impala 2.11.0
• Component/s: Frontend
• Epic Color: ghx-label-6
• Assignee: Bikramjeet Vig
• Reporter: Taras Bobrovytsky
• Created: 17/Aug/17 23:59
• Updated: 07/Sep/17 00:02
• Resolved: 07/Sep/17 00:02

Description

Query:

select count(*) from (select * from functional.alltypes) x cross join (select 1 as j) y where j is null

FE Exception:

java.lang.NullPointerException                
  at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:187)             
  at org.apache.impala.planner.SingleNodePlanner.getHashLookupJoinConjuncts(SingleNodePlanner.java:1375)
  at org.apache.impala.planner.SingleNodePlanner.createJoinNode(SingleNodePlanner.java:1437)
  at org.apache.impala.planner.SingleNodePlanner.createJoinPlan(SingleNodePlanner.java:482)
  at org.apache.impala.planner.SingleNodePlanner.createCheapestJoinPlan(SingleNodePlanner.java:410)
  at org.apache.impala.planner.SingleNodePlanner.createTableRefsPlan(SingleNodePlanner.java:792)
  at org.apache.impala.planner.SingleNodePlanner.createSelectPlan(SingleNodePlanner.java:617)
  at org.apache.impala.planner.SingleNodePlanner.createQueryPlan(SingleNodePlanner.java:260)
  at org.apache.impala.planner.SingleNodePlanner.createSingleNodePlan(SingleNodePlanner.java:150)
  at org.apache.impala.planner.Planner.createPlan(Planner.java:96)                         
  at org.apache.impala.service.Frontend.createExecRequest(Frontend.java:1004)              
  at org.apache.impala.service.Frontend.createExecRequest(Frontend.java:1100)              
  at org.apache.impala.service.JniFrontend.createExecRequest(JniFrontend.java:156)         
I0817 16:57:08.517293 30388 status.cc:122] NullPointerException: null                      
    @           0x83dc19  impala::Status::Status()                                         
    @           0xb6e709  impala::JniUtil::GetJniExceptionMsg()                            
    @           0xa7949b  impala::Frontend::GetExecRequest()                               
    @           0xa935c8  impala::ImpalaServer::ExecuteInternal()                          
    @           0xa99bb8  impala::ImpalaServer::Execute()                                  
    @           0xad9426  impala::ImpalaServer::query()                                    
    @           0xd6a7d5  beeswax::BeeswaxServiceProcessor::process_query()                
    @           0xd6dad4  beeswax::BeeswaxServiceProcessor::dispatchCall()                 
    @           0x80de8c  apache::thrift::TDispatchProcessor::process()                    
    @          0x1b4f8bb  apache::thrift::server::TThreadPoolServer::Task::run()           
    @          0x1b37279  apache::thrift::concurrency::ThreadManager::Worker::run()        
    @           0x9d2de9  impala::ThriftThread::RunRunnable()                              
    @           0x9d3842  boost::detail::function::void_function_obj_invoker0<>::invoke()  
    @           0xbd1612  impala::Thread::SuperviseThread()                                
    @           0xbd1f64  boost::detail::thread_data<>::run()                              
    @           0xe5a42a  thread_proxy                                                     
    @     0x7f858adf0184  start_thread                                                     
    @     0x7f858ab1cffd  clone