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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HHH" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-10746" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-70071d24-645e-436a-9efc-de38ed8aff7f" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://hibernate.atlassian.net/browse/HHH-10746" style="color: #3b73af; text-decoration: none">HHH-10746</a> </td>
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<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://hibernate.atlassian.net/browse/HHH-10746" style="color: #3b73af; text-decoration: none">Criteria API drastically degrades performance</a> </span> </td>
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<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-avatar-70071d24-645e-436a-9efc-de38ed8aff7f" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"> Bug </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Affects Versions:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 5.1.0 </td>
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> Unassigned </td>
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> hibernate-core </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Created:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 17/May/2016 07:18 AM </td>
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<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-static-blocker-8bde9ec1-50bd-4efa-84fe-553a6714b7b9" height="16" width="16" border="0" align="absmiddle" alt="Blocker" style="vertical-align: text-bottom"> Blocker </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Reporter:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="RemoM" id="email_RemoM" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=RemoM" style="color:#6c797f;; color: #3b73af; text-decoration: none">RemoM</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0">Especially in multi-threaded in environments, the classloader is accessed way to often to convert the Criteria Query into SQL. In some containers like Tomcat we observed that the classloader is synchronized. This combination drastically degrades performance of our application servers.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">see</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0"><a href="http://dimovelev.blogspot.ch/2015/02/performance-pitfalls-hibernate-criteria.html" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">http://dimovelev.blogspot.ch/2015/02/performance-pitfalls-hibernate-criteria.html</a></p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">or </p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0"><a href="https://hibernate.atlassian.net/browse/HHH-9895" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">https://hibernate.atlassian.net/browse/HHH-9895</a></p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">which was closed without further information. The code in question:</p>
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<span class="code-object" style="color: #910091">Thread</span> [main] (Suspended (breakpoint at line 191 in ReflectHelper))
owns: QueryTranslatorImpl (id=8378)
ReflectHelper.classForName(<span class="code-object" style="color: #910091">String</span>) line: 191
ReflectHelper.getConstantValue(<span class="code-object" style="color: #910091">String</span>) line: 279
QueryTranslatorImpl$JavaConstantConverter.handleDotStructure(AST) line: 624
QueryTranslatorImpl$JavaConstantConverter.visit(AST) line: 619
NodeTraverser.visitDepthFirst(AST) line: 78
NodeTraverser.traverseDepthFirst(AST) line: 67
QueryTranslatorImpl.parse(<span class="code-object" style="color: #910091">boolean</span>) line: 300
QueryTranslatorImpl.doCompile(Map, <span class="code-object" style="color: #910091">boolean</span>, <span class="code-object" style="color: #910091">String</span>) line: 203
QueryTranslatorImpl.compile(Map, <span class="code-object" style="color: #910091">boolean</span>) line: 158
HQLQueryPlan.<init>(<span class="code-object" style="color: #910091">String</span>, <span class="code-object" style="color: #910091">String</span>, <span class="code-object" style="color: #910091">boolean</span>, Map<<span class="code-object" style="color: #910091">String</span>,Filter>, SessionFactoryImplementor, EntityGraphQueryHint) line: 131
HQLQueryPlan.<init>(<span class="code-object" style="color: #910091">String</span>, <span class="code-object" style="color: #910091">boolean</span>, Map<<span class="code-object" style="color: #910091">String</span>,Filter>, SessionFactoryImplementor) line: 93
QueryPlanCache.getHQLQueryPlan(<span class="code-object" style="color: #910091">String</span>, <span class="code-object" style="color: #910091">boolean</span>, Map<<span class="code-object" style="color: #910091">String</span>,Filter>) line: 167
SessionImpl(AbstractSessionImpl).getHQLQueryPlan(<span class="code-object" style="color: #910091">String</span>, <span class="code-object" style="color: #910091">boolean</span>) line: 301
SessionImpl(AbstractSessionImpl).createQuery(<span class="code-object" style="color: #910091">String</span>) line: 236
SessionImpl.createQuery(<span class="code-object" style="color: #910091">String</span>) line: 1800
EntityManagerImpl(AbstractEntityManagerImpl).createQuery(<span class="code-object" style="color: #910091">String</span>, <span class="code-object" style="color: #910091">Class</span><T>, Selection, QueryOptions) line: 568
CriteriaQueryImpl$1.buildCompiledQuery(HibernateEntityManagerImplementor, InterpretedParameterMetadata) line: 336
CriteriaCompiler.compile(CompilableCriteria) line: 147
EntityManagerImpl(AbstractEntityManagerImpl).createQuery(CriteriaQuery<T>) line: 736
Activity
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</div> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">A solution/workaround for this problem is necssary.</p> </td>
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