Impala Public Jenkins has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/15021 )

Change subject: IMPALA-9249: Fix ORC scanner crash when root type is not struct
......................................................................

IMPALA-9249: Fix ORC scanner crash when root type is not struct

The root type should be struct as far as I know, and this was
checked with a DCHECK, leading to crashes in fuzz tests. This
change replaced the DCHECK with returning an error message.

Testing:
- added corrupt ORC file and e2e test

Change-Id: I7fba8cffbcdf8f647e27e2d5ee9e6716a4492b9b
Reviewed-on: http://gerrit.cloudera.org:8080/15021
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
---
M be/src/exec/hdfs-orc-scanner.cc
M be/src/exec/orc-metadata-utils.cc
M be/src/exec/orc-metadata-utils.h
M testdata/data/README
A testdata/data/corrupt_root_type.orc
M tests/query_test/test_scanners.py
6 files changed, 40 insertions(+), 24 deletions(-)

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

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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I7fba8cffbcdf8f647e27e2d5ee9e6716a4492b9b
Gerrit-Change-Number: 15021
Gerrit-PatchSet: 7
Gerrit-Owner: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Zoltan Borok-Nagy <[email protected]>

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