The deletion timer for data_quality_hourly table is not deleting partitions properly,
because the regular expression in Hive.py L376:

partition_regex = re.compile(r'(\w+)=["\']?([\w\-]+)["\']?')

is not parsing correctly partition values that have dots (.) in them, like: source_table=event.navigationtiming.
The deletion script was parsing the partition value as source_table=event,
and when trying to delete it, it failed.
It failed silently, because the partition deletion statement uses DROP IF EXISTS PARTITION.

We should add the dot (.) to the regular expression,
unless this becomes a security problem?