<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head> 
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 
        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0"> 
        <base href="https://jira.qos.ch"> 
        <title>Message Title</title> 
    </head> 
    <body class="jira" style="color: #333333; font-family: Arial, sans-serif; font-size: 14px; line-height: 1.429"> 
        <table id="background-table" cellpadding="0" cellspacing="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; background-color: #f5f5f5; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt" bgcolor="#f5f5f5"> 
            <!-- header here --> 
            <tbody>
                <tr> 
                    <td id="header-pattern-container" style="padding: 0px; border-collapse: collapse; padding: 10px 20px"> 
                        <table id="header-pattern" cellspacing="0" cellpadding="0" border="0" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> 
                            <tbody>
                                <tr> 
                                    <td id="header-avatar-image-container" valign="top" style="padding: 0px; border-collapse: collapse; vertical-align: top; width: 32px; padding-right: 8px" width="32"> <img id="header-avatar-image" class="image_fix" src="cid:jira-generated-image-avatar-ad614028-a4d7-4653-b92b-3178d4bffc71" height="32" width="32" border="0" style="border-radius: 3px; vertical-align: top"> </td> 
                                    <td id="header-text-container" valign="middle" style="padding: 0px; border-collapse: collapse; vertical-align: middle; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 1px"> <a class="user-hover" rel="msteiger" id="email_msteiger" href="https://jira.qos.ch/secure/ViewProfile.jspa?name=msteiger" style="color:#3b73af;; color: #3b73af; text-decoration: none">Martin Steiger</a> <strong>commented</strong> on <a href="https://jira.qos.ch/browse/LOGBACK-1165" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-7d4f6f88-3961-460a-aded-2725616ec421" height="16" width="16" border="0" align="absmiddle" alt="Bug"> LOGBACK-1165</a> </td> 
                                </tr> 
                            </tbody>
                        </table> </td> 
                </tr> 
                <tr> 
                    <td id="email-content-container" style="padding: 0px; border-collapse: collapse; padding: 0 20px"> 
                        <table id="email-content-table" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; border-spacing: 0; border-collapse: separate"> 
                            <tbody>
                                <tr> 
                                    <!-- there needs to be content in the cell for it to render in some clients --> 
                                    <td class="email-content-rounded-top mobile-expand" style="padding: 0px; border-collapse: collapse; color: #ffffff; padding: 0 15px 0 16px; height: 15px; background-color: #ffffff; border-left: 1px solid #cccccc; border-top: 1px solid #cccccc; border-right: 1px solid #cccccc; border-bottom: 0; border-top-right-radius: 5px; border-top-left-radius: 5px; height: 10px; line-height: 10px; padding: 0 15px 0 16px; mso-line-height-rule: exactly" height="10" bgcolor="#ffffff"> </td> 
                                </tr> 
                                <tr> 
                                    <td class="email-content-main mobile-expand " style="padding: 0px; border-collapse: collapse; border-left: 1px solid #cccccc; border-right: 1px solid #cccccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #ffffff" bgcolor="#ffffff"> 
                                        <table class="page-title-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> 
                                            <tbody>
                                                <tr> 
                                                    <td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://jira.qos.ch/browse/LOGBACK-1165" style="color: #3b73af; text-decoration: none">Re: MDCFilter crashes with NPE when value is not set</a> </span> </td> 
                                                </tr> 
                                            </tbody>
                                        </table> </td> 
                                </tr> 
                                <tr> 
                                    <td id="text-paragraph-pattern-top" class="email-content-main mobile-expand  comment-top-pattern" style="padding: 0px; border-collapse: collapse; border-left: 1px solid #cccccc; border-right: 1px solid #cccccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #ffffff; border-bottom: none; padding-bottom: 0" bgcolor="#ffffff"> 
                                        <table class="text-paragraph-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 2px"> 
                                            <tbody>
                                                <tr> 
                                                    <td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin: 10px 0 0 0; margin-top: 0">Thanks for looking into this. If I remember correctly the use case was this: the application runs different "jobs" at different times. The MDCFilter was used to write the log data from the different jobs to separate files. When no job runs, it should forward log data to a file without job ID suffix. So I just removed the key/value pair, and it crashed with an NPE.</p> <p style="margin: 10px 0 0 0">I still think that making the MDC key/value properties optional is an improvement. Maybe I should have added more JavaDoc to explain the exact behavior.</p> <p style="margin: 10px 0 0 0">key != null --> value must match based on equals()</p> <p style="margin: 10px 0 0 0">key == null --> anything will match (even null)</p> <p style="margin: 10px 0 0 0">What do you think?</p> <p style="margin: 10px 0 0 0"> </p> </td> 
                                                </tr> 
                                            </tbody>
                                        </table> </td> 
                                </tr> 
                                <tr> 
                                    <td class="email-content-main mobile-expand " style="padding: 0px; border-collapse: collapse; border-left: 1px solid #cccccc; border-right: 1px solid #cccccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #ffffff" bgcolor="#ffffff"> 
                                        <table id="actions-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 1px"> 
                                            <tbody>
                                                <tr> 
                                                    <td id="actions-pattern-container" valign="middle" style="padding: 0px; border-collapse: collapse; padding: 10px 0 10px 24px; vertical-align: middle; padding-left: 0"> 
                                                        <table align="left" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> 
                                                            <tbody>
                                                                <tr> 
                                                                    <td class="actions-pattern-action-icon-container" style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 0px; vertical-align: middle"> <a href="https://jira.qos.ch/browse/LOGBACK-1165#add-comment" target="_blank" title="Add Comment" style="color: #3b73af; text-decoration: none"> <img class="actions-pattern-action-icon-image" src="cid:jira-generated-image-static-comment-icon-ec0a543f-7cc9-4f7b-82a9-db32c1236990" alt="Add Comment" title="Add Comment" height="16" width="16" border="0" style="vertical-align: middle"> </a> </td> 
                                                                    <td class="actions-pattern-action-text-container" style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 4px; padding-left: 5px"> <a href="https://jira.qos.ch/browse/LOGBACK-1165#add-comment" target="_blank" title="Add Comment" style="color: #3b73af; text-decoration: none">Add Comment</a> </td> 
                                                                </tr> 
                                                            </tbody>
                                                        </table> </td> 
                                                </tr> 
                                            </tbody>
                                        </table> </td> 
                                </tr> 
                                <!-- there needs to be content in the cell for it to render in some clients --> 
                                <tr> 
                                    <td class="email-content-rounded-bottom mobile-expand" style="padding: 0px; border-collapse: collapse; color: #ffffff; padding: 0 15px 0 16px; height: 5px; line-height: 5px; background-color: #ffffff; border-top: 0; border-left: 1px solid #cccccc; border-bottom: 1px solid #cccccc; border-right: 1px solid #cccccc; border-bottom-right-radius: 5px; border-bottom-left-radius: 5px; mso-line-height-rule: exactly" height="5" bgcolor="#ffffff"> </td> 
                                </tr> 
                            </tbody>
                        </table> </td> 
                </tr> 
                <tr> 
                    <td id="footer-pattern" style="padding: 0px; border-collapse: collapse; padding: 12px 20px"> 
                        <table id="footer-pattern-container" cellspacing="0" cellpadding="0" border="0" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> 
                            <tbody>
                                <tr> 
                                    <td id="footer-pattern-text" class="mobile-resize-text" width="100%" style="padding: 0px; border-collapse: collapse; color: #999999; font-size: 12px; line-height: 18px; font-family: Arial, sans-serif; mso-line-height-rule: exactly; mso-text-raise: 2px"> This message was sent by Atlassian JIRA <span id="footer-build-information">(v7.3.1#73012-<span title="68837e38d8ed1b069612405186dcdceed665bb39" data-commit-id="68837e38d8ed1b069612405186dcdceed665bb39}">sha1:68837e3</span>)</span> </td> 
                                    <td id="footer-pattern-logo-desktop-container" valign="top" style="padding: 0px; border-collapse: collapse; padding-left: 20px; vertical-align: top"> 
                                        <table style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> 
                                            <tbody>
                                                <tr> 
                                                    <td id="footer-pattern-logo-desktop-padding" style="padding: 0px; border-collapse: collapse; padding-top: 3px"> <img id="footer-pattern-logo-desktop" src="cid:jira-generated-image-static-footer-desktop-logo-19bc9f8a-a651-468c-ba4c-5a03ea5d667b" alt="Atlassian logo" title="Atlassian logo" width="169" height="36" class="image_fix"> </td> 
                                                </tr> 
                                            </tbody>
                                        </table> </td> 
                                </tr> 
                            </tbody>
                        </table> </td> 
                </tr> 
            </tbody>
        </table>   
    </body>
</html>