Harshakiran Reddy created HDFS-12833:
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Summary: In Distcp, Delete option not having the proper usage
message.
Key: HDFS-12833
URL: https://issues.apache.org/jira/browse/HDFS-12833
Project: Hadoop HDFS
Issue Type: Bug
Components: distcp, hdfs
Affects Versions: 3.0.0-alpha1
Reporter: Harshakiran Reddy
Priority: Minor
Basically Delete option applicable only with update or overwrite options. I
tried as per usage message am getting the bellow exception.
{noformat}
bin:> ./hadoop distcp -delete /Dir1/distcpdir /Dir/distcpdir5
2017-11-17 20:48:09,828 ERROR tools.DistCp: Invalid arguments:
java.lang.IllegalArgumentException: Delete missing is applicable only with
update or overwrite options
at
org.apache.hadoop.tools.DistCpOptions$Builder.validate(DistCpOptions.java:528)
at
org.apache.hadoop.tools.DistCpOptions$Builder.build(DistCpOptions.java:487)
at org.apache.hadoop.tools.OptionsParser.parse(OptionsParser.java:233)
at org.apache.hadoop.tools.DistCp.run(DistCp.java:141)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
at org.apache.hadoop.tools.DistCp.main(DistCp.java:432)
Invalid arguments: Delete missing is applicable only with update or overwrite
options
usage: distcp OPTIONS [source_path...] <target_path>
OPTIONS
-append Reuse existing data in target files and
append new data to them if possible
-async Should distcp execution be blocking
-atomic Commit all changes or none
-bandwidth <arg> Specify bandwidth per map in MB, accepts
bandwidth as a fraction.
-blocksperchunk <arg> If set to a positive value, fileswith more
blocks than this value will be split into
chunks of <blocksperchunk> blocks to be
transferred in parallel, and reassembled on
the destination. By default,
<blocksperchunk> is 0 and the files will be
transmitted in their entirety without
splitting. This switch is only applicable
when the source file system implements
getBlockLocations method and the target
file system implements concat method
-copybuffersize <arg> Size of the copy buffer to use. By default
<copybuffersize> is 8192B.
-delete Delete from target, files missing in source
-diff <arg> Use snapshot diff report to identify the
difference between source and target
{noformat}
Even in Document also it's not updated proper usage.
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