本文整理匯總了Java中org.apache.hadoop.fs.FileUtil.makeShellPath方法的典型用法代碼示例。如果您正苦於以下問題：Java FileUtil.makeShellPath方法的具體用法？Java FileUtil.makeShellPath怎麽用？Java FileUtil.makeShellPath使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類org.apache.hadoop.fs.FileUtil的用法示例。
在下文中一共展示了FileUtil.makeShellPath方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: buildCommandLine
import org.apache.hadoop.fs.FileUtil; //導入方法依賴的package包/類
/**
* Construct the command line for running the task JVM
* @param setup The setup commands for the execed process.
* @param cmd The command and the arguments that should be run
* @param stdoutFilename The filename that stdout should be saved to
* @param stderrFilename The filename that stderr should be saved to
* @param tailLength The length of the tail to be saved.
* @return the command line as a String
* @throws IOException
*/
static String buildCommandLine(List<String> setup, List<String> cmd,
File stdoutFilename,
File stderrFilename,
long tailLength,
boolean useSetsid)
throws IOException {
String stdout = FileUtil.makeShellPath(stdoutFilename);
String stderr = FileUtil.makeShellPath(stderrFilename);
StringBuffer mergedCmd = new StringBuffer();
// Export the pid of taskJvm to env variable JVM_PID.
// Currently pid is not used on Windows
if (!Shell.WINDOWS) {
mergedCmd.append(" export JVM_PID=`echo $$` ; ");
}
if (setup != null && setup.size() > 0) {
mergedCmd.append(addCommand(setup, false));
mergedCmd.append(";");
}
if (tailLength > 0) {
mergedCmd.append("(");
} else if(ProcessTree.isSetsidAvailable && useSetsid &&
!Shell.WINDOWS) {
mergedCmd.append("exec setsid ");
} else {
mergedCmd.append("exec ");
}
mergedCmd.append(addCommand(cmd, true));
mergedCmd.append(" < /dev/null ");
if (tailLength > 0) {
mergedCmd.append(" | ");
mergedCmd.append(tailCommand);
mergedCmd.append(" -c ");
mergedCmd.append(tailLength);
mergedCmd.append(" >> ");
mergedCmd.append(stdout);
mergedCmd.append(" ; exit $PIPESTATUS ) 2>&1 | ");
mergedCmd.append(tailCommand);
mergedCmd.append(" -c ");
mergedCmd.append(tailLength);
mergedCmd.append(" >> ");
mergedCmd.append(stderr);
mergedCmd.append(" ; exit $PIPESTATUS");
} else {
mergedCmd.append(" 1>> ");
mergedCmd.append(stdout);
mergedCmd.append(" 2>> ");
mergedCmd.append(stderr);
}
return mergedCmd.toString();
}