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https://issues.apache.org/jira/browse/HADOOP-10733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14039680#comment-14039680
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Larry McCay commented on HADOOP-10733:
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Hi [~tedyu] - good catch - will you provide a patch for this with a test?
Otherwise, I can.
> 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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