Tim Armstrong has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/8936 )

Change subject: IMPALA-3833: Fix invalid data handling in Sequence and RCFile 
scanners
......................................................................


Patch Set 3:

I hit a DCHECK after running this in a loop for a couple minutes.

  F0118 11:53:48.126408 11019 scanner-context.inline.h:97] Check failed: 
bytes_left > 0 (-197 vs. 0)
*** Check failure stack trace: ***
    @          0x3c0541d  google::LogMessage::Fail()
    @          0x3c06cc2  google::LogMessage::SendToLog()
    @          0x3c04df7  google::LogMessage::Flush()
    @          0x3c083be  google::LogMessageFatal::~LogMessageFatal()
    @          0x1bc5c8b  impala::ScannerContext::Stream::SkipBytes()
    @          0x1bc320a  impala::HdfsRCFileScanner::ReadColumnBuffers()
    @          0x1bc1a71  impala::HdfsRCFileScanner::StartRowGroup()
    @          0x1bc38ba  impala::HdfsRCFileScanner::ProcessRange()
    @          0x293ecaa  impala::BaseSequenceScanner::GetNextInternal()
    @          0x1ba2ede  impala::HdfsScanner::ProcessSplit()
    @          0x1b7b1b4  impala::HdfsScanNode::ProcessSplit()
    @          0x1b7a5df  impala::HdfsScanNode::ScannerThread()
    @          0x1b79a62  
_ZZN6impala12HdfsScanNode22ThreadTokenAvailableCbEPNS_17ThreadResourceMgr12ResourcePoolEENKUlvE_clEv
    @          0x1b7ba05  
_ZN5boost6detail8function26void_function_obj_invoker0IZN6impala12HdfsScanNode22ThreadTokenAvailableCbEPNS3_17ThreadResourceMgr12ResourcePoolEEUlvE_vE6invokeERNS1_15function_bufferE
    @          0x17d6bda  boost::function0<>::operator()()
    @          0x1ad0bf7  impala::Thread::SuperviseThread()
    @          0x1ad990c  boost::_bi::list4<>::operator()<>()
    @          0x1ad984f  boost::_bi::bind_t<>::operator()()
    @          0x1ad9812  boost::detail::thread_data<>::run()
    @          0x2d8edba  thread_proxy
    @     0x7f4c344426ba  start_thread
    @     0x7f4c341783dd  clone
Picked up JAVA_TOOL_OPTIONS: 
-agentlib:jdwp=transport=dt_socket,address=30000,server=y,suspend=n
Wrote minidump to 
/home/tarmstrong/Impala/incubator-impala/logs/cluster/minidumps/impalad/aadeb6a5-be5b-4a86-c5991d87-fa93553b.dmp


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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ic9cfc38af3f30c65ada9734eb471dbfa6ecdd74a
Gerrit-Change-Number: 8936
Gerrit-PatchSet: 3
Gerrit-Owner: Pranay Singh
Gerrit-Reviewer: Pranay Singh
Gerrit-Reviewer: Tim Armstrong <[email protected]>
Gerrit-Reviewer: anujphadke <[email protected]>
Gerrit-Comment-Date: Thu, 18 Jan 2018 19:55:33 +0000
Gerrit-HasComments: No

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