Destination: Fix ConcurrentModificationException

Use a ConcurrentMap to cover unsynchronized reads happening during
synchronized writes.

Change-Id: I09fb626104361f20b62216d939c85219657678ab
1 file changed
tree: 64e3f281e282ad21de327d9dab48b0ac98463487
  1. .gitignore
  2. .mailmap
  3. .settings/
  4. BUILD
  5. LICENSE
  6. src/