修复executeToClusters 函数的 data race
修复executeToClusters 函数的 data race

qiniu/logkit,wonderflow/logkit-1,qiniu/logkit,qiniu/logkit,andrewei1316/logkit,andrewei1316/logkit,wonderflow/logkit-1,andrewei1316/logkit,qiniu/logkit,qiniu/logkit,wonderflow/logkit-1,andrewei1316/logkit,wonderflow/logkit-1