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Posted to common-dev@hadoop.apache.org by "Jiahongchao (Jira)" <ji...@apache.org> on 2021/09/23 07:15:00 UTC

[jira] [Created] (HADOOP-17933) Document of "DistCp Guide" is wrong

Jiahongchao created HADOOP-17933:
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             Summary: Document of "DistCp Guide" is wrong
                 Key: HADOOP-17933
                 URL: https://issues.apache.org/jira/browse/HADOOP-17933
             Project: Hadoop Common
          Issue Type: Bug
          Components: documentation
            Reporter: Jiahongchao


In [https://hadoop.apache.org/docs/stable/hadoop-distcp/DistCp.html,] it says
{quote}Now, consider the following copy operation:
distcp hdfs://nn1:8020/source/first hdfs://nn1:8020/source/second hdfs://nn2:8020/target
With sources/sizes:
hdfs://nn1:8020/source/first/1 32
hdfs://nn1:8020/source/first/2 32
hdfs://nn1:8020/source/second/10 64
hdfs://nn1:8020/source/second/20 32
And destination/sizes:
hdfs://nn2:8020/target/1 32
hdfs://nn2:8020/target/10 32
hdfs://nn2:8020/target/20 64
Will effect:
hdfs://nn2:8020/target/1 32
hdfs://nn2:8020/target/2 32
hdfs://nn2:8020/target/10 64
hdfs://nn2:8020/target/20 32{quote}
However, since neither _{{-update}}_ or _-overwrite_ is used, _*first*_ and _*second*_ directories** _**_ will be created



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