I have distcp a file between two hdfs cluster with same version,when I execute failed ,I want to find the failed mapreduce task and related file path,then replay.
How can I get distcp failed files and replay the task?
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Copying 'retrying' actually already happens exactly (
mapred.map.max.attemptstimes).If you rerun distcp again, it will only try to copy files that haven't already been copied. (files successfully copied by a previous distcp on a re-execution will be marked as "skipped".)
If you would like a log of the files that couldn't be copied you can specify '
-i' and-log <logdir>. This will ignore failures but write out a more complete log of what failed and why they failed.