Fixed so that the number of bytes sent to the workers is stored [skip CI]
Fixed so that the number of bytes sent to the workers is stored [skip CI]


Former-commit-id: c22f313153ac7c5eebf94c33b22a9a8c31a6226e
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine