yarn的job提交流程

1.在WCRunner.java中以下代碼處打斷點，進入waitForCompletion 2.waitForCompletion在Job.class中 3. 4. 5. 6. 7.   8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19.還是在這個函數裏，新建路徑/tmp/hadoop-yarn/staging/centosdvd/.staging/job_

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