This assert fails pretty reliably. I'm looking at code to see why, but thought you might already have an idea of what to look at.

```
11:45:23.697 [info] Write 1000 keys
11:45:25.364 [info] Wait until AAE builds all partition trees across ['dev1@127.0.0.1']
11:45:27.366 [info] Build took 2002608 us
11:45:28.870 [info] Wait until AAE builds all partition trees across ['dev1@127.0.0.1']
11:45:33.880 [info] Build took 5010128 us
11:45:35.383 [info] Wait until AAE builds all partition trees across ['dev1@127.0.0.1']
11:45:44.393 [info] Build took 9010593 us
11:45:44.393 [info] assert(9010593 > 10020256)
```