Tim Armstrong
9090fc239b
IMPALA-8097: mt_dop for all queries via hidden flag
...
--unlock_mt_dop=true unlocks mt_dop for all queries
including joins and inserts.
This disables the parallel plans with separate join builds
when running standalone, because these are not executable
until IMPALA-4224 is implemented. Inserts work without
modification - they were disabled because of lack of
testing and the possibility for generating many small
files with unpartitioned inserts - see IMPALA-8125.
Testing:
Add custom cluster test that exercise joins, runtime filters
and inserts as a sanity check for the flag.
Ran exhaustive build.
Manually ran TPC-H and TPC-DS tests against a minicluster
with mt_dop = 4.
Change-Id: I72f0b02a005e8bf22fd17b8fb5aabf8c0d9b6b15
Reviewed-on: http://gerrit.cloudera.org:8080/12257
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com >
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com >
2019-03-19 01:20:13 +00:00
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