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https://issues.apache.org/jira/browse/HADOOP-10733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Ted Yu updated HADOOP-10733:
----------------------------

    Description: 
{code}
      char[] newPassword1 = c.readPassword("Enter password: ");
      char[] newPassword2 = c.readPassword("Enter password again: ");
      noMatch = !Arrays.equals(newPassword1, newPassword2);
      if (noMatch) {
        Arrays.fill(newPassword1, ' ');
{code}
newPassword1 might be null, leading to NullPointerException in Arrays.fill() 
call.
Similar issue for the following call on line 381:
{code}
      Arrays.fill(newPassword2, ' ');
{code}

  was:
{code}
      char[] newPassword1 = c.readPassword("Enter password: ");
      char[] newPassword2 = c.readPassword("Enter password again: ");
      noMatch = !Arrays.equals(newPassword1, newPassword2);
      if (noMatch) {
        Arrays.fill(newPassword1, ' ');
{code}
newPassword1 might be null, leading to NullPointerException in Arrays.fill() 
call.


> Potential null dereference in CredentialShell#promptForCredential()
> -------------------------------------------------------------------
>
>                 Key: HADOOP-10733
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10733
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Priority: Minor
>
> {code}
>       char[] newPassword1 = c.readPassword("Enter password: ");
>       char[] newPassword2 = c.readPassword("Enter password again: ");
>       noMatch = !Arrays.equals(newPassword1, newPassword2);
>       if (noMatch) {
>         Arrays.fill(newPassword1, ' ');
> {code}
> newPassword1 might be null, leading to NullPointerException in Arrays.fill() 
> call.
> Similar issue for the following call on line 381:
> {code}
>       Arrays.fill(newPassword2, ' ');
> {code}



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