Tim Armstrong 4a3ef9c773 IMPALA-5554: sorter DCHECK on null column ...

The bug was in the DCHECK. The DCHECK is intended to make sure that a
tuple's string data didn't get split across blocks. The logic assumed
that if the second-or-later string column was in the next-block, that
the strings were split between blocks. However, that assumption is
invalid if there are NULL strings, which do not belong in any block.

The fix for the DCHECK (which is still useful) is to count the number
of non-NULL strings and make sure that no non-NULL strings were split
between blocks.

Testing:
Added a test that reproduces the crash.

Change-Id: I7a8dee982501008efff5b5abc192cfb5e6544a90
Reviewed-on: http://gerrit.cloudera.org:8080/7295
Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com>
Tested-by: Impala Public Jenkins

2017-06-27 05:36:11 +00:00

..

queries

IMPALA-5554: sorter DCHECK on null column

2017-06-27 05:36:11 +00:00

functional-query_core.csv

IMPALA-3718: Support subset of functional-query for Kudu

2016-09-14 22:11:04 +00:00

functional-query_dimensions.csv

Starting Kudu as part of the run-all.sh command / data loading

2015-06-01 15:53:34 -07:00

functional-query_exhaustive.csv

IMPALA-3718: Support subset of functional-query for Kudu

2016-09-14 22:11:04 +00:00

functional-query_pairwise.csv

IMPALA-3718: Support subset of functional-query for Kudu

2016-09-14 22:11:04 +00:00