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                                    <td id="header-avatar-image-container" valign="top" style="padding: 0; border-collapse: collapse; vertical-align: top; width: 32px; padding-right: 8px" width="32"> <img id="header-avatar-image" class="image_fix" src="https://avatar-cdn.atlassian.com/effee5f48306ccc40e3a56d5cfc3a40c?s=48&amp;d=https%3A%2F%2Fsecure.gravatar.com%2Favatar%2Feffee5f48306ccc40e3a56d5cfc3a40c%3Fd%3Dmm%26s%3D48%26noRedirect%3Dtrue" height="32" width="32" border="0" style="border-radius: 3px; vertical-align: top"> </td> 
                                    <td id="header-text-container" valign="middle" style="padding: 0; 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="dirk86" id="email_dirk86" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=dirk86" style="color:#6c797f;; color: #3b73af; text-decoration: none">Dirk Kröhan</a> <strong>commented</strong> on <a href="https://hibernate.atlassian.net/browse/HHH-12281" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-d6400d0c-cee7-4296-acf1-fcb1bdbd6f94" height="16" width="16" border="0" align="absmiddle" alt="Bug"> HHH-12281</a> </td> 
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                    <td id="email-content-container" style="padding: 0; border-collapse: collapse; padding: 0 20px"> 
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                                    <!-- 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: 0; 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">&nbsp;</td> 
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                                    <td class="email-content-main mobile-expand " style="padding: 0; 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: 0; mso-table-rspace: 0"> 
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                                                    <td style="vertical-align: top;; padding: 0; 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://hibernate.atlassian.net/browse/HHH-12281" style="color: #3b73af; text-decoration: none">Re: SELECT - FOR UPDATE NOWAIT hangs if lock cannot be acquired</a> </span> </td> 
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                                                    <td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin: 10px 0 0; margin-top: 0">I stumbled over this issue because I am struggling with the same issue. I created a runnable test using the provided template. As a short explanation:</p> <p style="margin: 10px 0 0">In total there are 3 testcases implemented in PessimisticWriteLockBaseTest.<br> The first test asserts that the correct exception class (javax.persistence.LockTimeoutException) is thrown.<br> The second test asserts that a LockTimeoutException is thrown immediately if the property "javax.persistence.lock.timeout" is set to 0.<br> The third test asserts that a LockTimeoutException is thrown after the specified timeout if the property "javax.persistence.lock.timeout" is set to a non zero value.</p> <p style="margin: 10px 0 0">While testing I observed a different behavior between a h2 and mysql. Therefore I created two persistence units and two test classes simply extending the PessimisticWriteLockBaseTest.<br> The mysql test cases requires a running mysql database. I added a mysql.yml file to simply start a mysql docker from IntelliJ.</p> </td> 
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