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https://issues.apache.org/jira/browse/CAY-2720?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nikita Timofeev closed CAY-2720.
--------------------------------
Resolution: Fixed
https://github.com/apache/cayenne/commit/3c2175fc7dd9053ee186f19a38caab5f2292fb63
> ConcurrentModificationException in the TypeAwareSQLTreeProcessor
> ----------------------------------------------------------------
>
> Key: CAY-2720
> URL: https://issues.apache.org/jira/browse/CAY-2720
> Project: Cayenne
> Issue Type: Bug
> Components: Core Library
> Affects Versions: 4.2.M3
> Reporter: Nikita Timofeev
> Assignee: Nikita Timofeev
> Priority: Major
> Fix For: 4.2.B1
>
>
> Seems like TypeAwareSQLTreeProcessor could lead to a
> {{ConcurrentModificationException}} when it lazily computes processors for
> attributes.
> Here's a stack trace:
> {code}
> Caused by: java.util.ConcurrentModificationException: null
> at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134)
> at
> org.apache.cayenne.access.sqlbuilder.sqltree.PerAttributeChildProcessor.process(PerAttributeChildProcessor.java:48)
> at
> org.apache.cayenne.access.translator.select.TypeAwareSQLTreeProcessor.onChildNodeStart(TypeAwareSQLTreeProcessor.java:88)
> at
> org.apache.cayenne.access.sqlbuilder.sqltree.Node.visit(Node.java:106)
> at
> org.apache.cayenne.access.sqlbuilder.sqltree.Node.visit(Node.java:109)
> at
> org.apache.cayenne.access.translator.select.TypeAwareSQLTreeProcessor.process(TypeAwareSQLTreeProcessor.java:61)
> at
> org.apache.cayenne.access.translator.select.SQLGenerationStage.perform(SQLGenerationStage.java:38)
> at
> org.apache.cayenne.access.translator.select.DefaultSelectTranslator.translate(DefaultSelectTranslator.java:98)
> at
> org.apache.cayenne.access.translator.select.DefaultSelectTranslator.getSql(DefaultSelectTranslator.java:104)
> at
> org.apache.cayenne.access.jdbc.SelectAction.performAction(SelectAction.java:87)
> at
> org.apache.cayenne.access.DataNodeQueryAction.runQuery(DataNodeQueryAction.java:97)
> at org.apache.cayenne.access.DataNode.performQueries(DataNode.java:273)
> {code}
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