If you are using the configuration option allrows_dss when
upgrading from a 15.0.x version to a 15.0.2 version in parallel mode, the
server may stack trace when the optimizer selects a plan that requires tempdb,
which has not yet been onlined.
Change configuration
from allrows_dss when rebooting with the
new binary. After a minor upgrade is complete, you can return the server
to its earlier configuration.