From https://tools.wmflabs.org/grid-jobs/ at 2018-06-28T00:00:
|Tool||Unique jobs||Active jobs||Jobs seen|
Drilling down shows that there are 99 enHashtagUpdate, 48 esHashtagUpdate, 73 ruHashtagUpdate, etc jobs running. I know that I have seen the concurrent job for this tool spike before, but this particular spike seems more extreme.
Total jobs active on the grid seems to have started climbing sharply around UTC midnight of 2018-06-27. That is probably not all attributable to the hashtags tool, but it seems likely that there is some correlation.