We should gracefully handle the case where processing data is undefined for a key. At the moment, this bug will cause a worker to crash. The balancer will restart the worker, but it shouldn't need to.
Created attachment 386997 [details] Patch
rs=me
Created attachment 387002 [details] Patch
Comment on attachment 387002 [details] Patch Clearing flags on attachment: 387002 Committed r254149: <https://trac.webkit.org/changeset/254149>
All reviewed patches have been landed. Closing bug.
<rdar://problem/58384493>