Impala Public Jenkins has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/8936 )

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

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

Introduced new error message when scanning a corrupt Sequence or RCFile.
Added new checks to detect buffer overrun while handling Sequence or RCFile.

Testing:
  a) Made changes to fuzz test for RCFile/Sequence file, ran fuzz test in a loop
      with 200 iteration without failure.

  b) Ran exhaustive test on the changes without failure.

Change-Id: Ic9cfc38af3f30c65ada9734eb471dbfa6ecdd74a
Reviewed-on: http://gerrit.cloudera.org:8080/8936
Reviewed-by: Tim Armstrong <tarmstr...@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
---
M be/src/exec/hdfs-rcfile-scanner.cc
M be/src/exec/hdfs-rcfile-scanner.h
M be/src/exec/hdfs-sequence-scanner.cc
M be/src/exec/hdfs-sequence-scanner.h
M be/src/exec/read-write-util-test.cc
M be/src/exec/read-write-util.h
M be/src/exec/scanner-context.inline.h
M be/src/util/decompress.cc
M tests/query_test/test_scanners_fuzz.py
9 files changed, 259 insertions(+), 72 deletions(-)

Approvals:
  Tim Armstrong: Looks good to me, approved
  Impala Public Jenkins: Verified

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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: Ic9cfc38af3f30c65ada9734eb471dbfa6ecdd74a
Gerrit-Change-Number: 8936
Gerrit-PatchSet: 21
Gerrit-Owner: Pranay Singh
Gerrit-Reviewer: Dan Hecht <dhe...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Pranay Singh
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Reviewer: anujphadke <apha...@cloudera.com>

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