the data source is kafka, and a field is a timestamp. We want to calculate the difference between the timestamps of the two pieces of data, and then add a new field to store this value and send it out. I checked. Do you want to reducebykeyandwindow? Wit...
execute go test command to report an error. What does it mean? debug call has arguments but no formatting directives in addition, what does the xxx stand for after go test-run xxx mean? check it out and see no clear statement ...
I try to run the main method directly in java to submit the job to yarn for execution. But get the following error message: 2018-08-26 10:25:37,544 INFO [main] mapreduce.Job (Job.java:monitorAndPrintJob(1375)) - Job job_1535213323614_0010 failed with ...