tree c35ec97c7dd4c25adb58f2ad2028c8e93a2a57aa
parent 0bf9f5ae26220bfdcff0b3332e810f00aa9a7789
author Martin Fick <mfick@codeaurora.org> 1580166869 -0700
committer Martin Fick <mfick@codeaurora.org> 1580167151 -0700

Shard the waiting directory to scale better

Previously all the waiting tasks were stored in the same "waiting"
directory. Since most filesystems don't scale well with more than 1000
entries in a directory, shard the "waiting" directory by the first two
characters of the taskKey. This will shard the waiting entries across a
max of 256 subdirectories, potentially providing improved scalibility
for up to 256K waiting entries.

Change-Id: I4da79306cb75a868a30ed98d5b33432dc3656b19