Worker

REGISTER

INFO: REGISTER : success as worker

EXTERNAL MERGE SORT

INFO: EXTERNAL MERGE SORT : done

/worker/externalSorted/testOutput.[workerOrder]

SAMPLE

INFO: SAMPLE : sampling is done

• 내부적으로 sampling 종료
• /worker/sample.[workerOrder]

INFO: Will try to send file  ...

INFO: SAMPLE : sending sample is done

• /master/sampled/sample.[workerOrder]

Register

MASTER