Multithreaded DomainBuilderOutputCommitter partition
Reverted back to old imports
Reformatted code
Fixed typo
Implemented changes from discussion of pull request
Implemented 1 missing change from discussion of pull request
Implemented changes from additional discussion of pull request
Made wait for termination loop infinite
Merge pull request #284 from matthagy/master

ANALYSIS-4538: Multi-thread DomainBuilderOutputCommitter