[ http://issues.apache.org/jira/browse/HADOOP-714?page=all ]
Milind Bhandarkar resolved HADOOP-714.
--------------------------------------
Fix Version/s: 0.9.0
Resolution: Duplicate
http://issues.apache.org/jira/browse/HADOOP-682
> Namenode format does not work when hadoop is installed for first time
> ---------------------------------------------------------------------
>
> Key: HADOOP-714
> URL: http://issues.apache.org/jira/browse/HADOOP-714
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.8.0
> Environment: Linux CentOS 4
> Reporter: Lei Chen
> Fix For: 0.9.0
>
>
> The namenode can not be formatted for the first time installation. There is a
> bug is the main function of org.apache.hadoop.dfs.NameNode class. The code
> will skip formatting when the directory for name does not exist. There is a
> possible fix for the bug
> if (argv.length == 1 && argv[0].equals("-format")) {
> boolean aborted = false;
> File[] dirs = getDirs(conf);
> for (int idx = 0; idx < dirs.length; idx++) {
> if (dirs[idx].exists()) {
> System.err.print("Re-format
> filesystem in " + dirs[idx]
> + " ? (Y or N)
> ");
> if (!(System.in.read() == 'Y'))
> {
> System.err
>
> .println("Format aborted in " + dirs[idx]);
> aborted = true;
> } else {
> System.out.println("do
> format"
> +
> dirs[idx].getAbsolutePath());
> format(dirs[idx]);
>
> System.err.println("Formatted " + dirs[idx]);
> }
> System.in.read(); // discard
> the enter-key
> } else {
> System.out.println("do format"
> +
> dirs[idx].getAbsolutePath());
> format(dirs[idx]);
> System.err.println("Formatted "
> + dirs[idx]);
> }
> }
> System.exit(aborted ? 1 : 0);
> }
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