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https://issues.apache.org/jira/browse/HADOOP-14115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17241559#comment-17241559
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Kevin Risden commented on HADOOP-14115:
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HADOOP-15681 might be the same as this ticket.
> SimpleDateFormatter's are construted w/default Locale, causing malformed
> dates on some platforms
> ------------------------------------------------------------------------------------------------
>
> Key: HADOOP-14115
> URL: https://issues.apache.org/jira/browse/HADOOP-14115
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Chris M. Hostetter
> Priority: Major
>
> In at least one place I know of in Hadoop, {{SimpleDateFormatter}} is used to
> serialize {{Date}} object in a format intended for machine consumption -- and
> should be following strict formatting rules -- but the
> {{SimpleDateFormatter}} instance is not constructed with an explicit
> {{Locale}} so the platform default is used instead. This causes things like
> "Day name in week" ({{E}}) to generate unexpected results depending on the
> Locale of the machine where the code is running, resulting in date-time
> strings that violate the formatting rules.
> A specific example of this is {{AuthenticationFilter.createAuthCookie}} which
> has code that looks like this...
> {code}
> Date date = new Date(expires);
> SimpleDateFormat df = new SimpleDateFormat("EEE, " +
> "dd-MMM-yyyy HH:mm:ss zzz");
> df.setTimeZone(TimeZone.getTimeZone("GMT"));
> sb.append("; Expires=").append(df.format(date));
> {code}
> ...which can cause invalid expiration attributes in the {{Set-Cookies}}
> header like this (as noted by http-commons's {{ResponseProcessCookies}}
> class...
> {noformat}
> WARN: Invalid cookie header: "Set-Cookie: hadoop.auth=; Path=/;
> Domain=127.0.0.1; Expires=Ara, 01-Sa-1970 00:00:00 GMT; HttpOnly". Invalid
> 'expires' attribute: Ara, 01-Sa-1970 00:00:00 GMT
> {noformat}
> There are very likely many other places in the hadoop code base where the
> default {{Locale}} is being unintentionally used when formatting
> Dates/Numbers.
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