tree 72308b5b2ab7897fe7bef1980b90d7617e20443c
parent dba120319599d4b43be83b6a9abd7b944a69af96
author Ali Alsuliman <ali.al.solaiman@gmail.com> 1557661197 -0700
committer Ali Alsuliman <ali.al.solaiman@gmail.com> 1557770802 +0000

[ASTERIXDB-2564][RT] Too many objects created in min() and max()

- user model changes: no
- storage format changes: no
- interface changes: no

Details:
During min() and max() aggregation, the functions keep track of
the aggregation type in order to handle heterogeneous  lists.
It promotes the aggregation type if needed (e.g. encountered double).
Don't switch to new aggregation type and create a new comparator
when the new input value type is the same as the previously
aggregated values. That is because canPromote(agg_type, new_val_type)
will always return true for same types.

Change-Id: I0bb9f0715985ae555de00bbf3173c80371d8968b
Reviewed-on: https://asterix-gerrit.ics.uci.edu/3391
Contrib: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Sonar-Qube: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Dmitry Lychagin <dmitry.lychagin@couchbase.com>