/**
* Implementation of Tool::run(). Orchestrates the copy of source file(s) to target location, by:
* 1. Creating a list of files to be copied to target. 2. Launching a Map-only job to copy the
* files. (Delegates to execute().)
*
* @param argv: List of arguments passed to DistCp, from the ToolRunner.
* @return On success, it returns 0. Else, -1.
*/
public int run(String[] argv) {
try {
inputOptions = (OptionsParser.parse(argv));
LOG.info("Input Options: " + inputOptions);
} catch (Throwable e) {
LOG.error("Invalid arguments: ", e);
System.err.println("Invalid arguments: " + e.getMessage());
OptionsParser.usage();
return DistCpConstants.INVALID_ARGUMENT;
}
try {
execute();
} catch (InvalidInputException e) {
LOG.error("Invalid input: ", e);
return DistCpConstants.INVALID_ARGUMENT;
} catch (DuplicateFileException e) {
LOG.error("Duplicate files in input path: ", e);
return DistCpConstants.DUPLICATE_INPUT;
} catch (Exception e) {
LOG.error("Exception encountered ", e);
return DistCpConstants.UNKNOWN_ERROR;
}
return DistCpConstants.SUCCESS;
}
