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Konrad Windszus edited comment on SLING-12160 at 11/17/23 11:13 AM: -------------------------------------------------------------------- I think this may happen when the {{MappingEntries}} are modified while iterating through https://github.com/apache/sling-org-apache-sling-resourceresolver/blob/a314ef3ce2e826bfde26493738ed94316c18bfbf/src/main/java/org/apache/sling/resourceresolver/impl/mapping/ResourceMapperImpl.java#L246 Even in master (although now due to refactoring in a different line) this may still happen in https://github.com/apache/sling-org-apache-sling-resourceresolver/blob/938fbfd176c58a9fb5bc5d18a37b47eb5c3c53bd/src/main/java/org/apache/sling/resourceresolver/impl/mapping/ResourceMapperImpl.java#L297. was (Author: kwin): I think this may happen when the {{MappingEntries}} are modified while iterating through https://github.com/apache/sling-org-apache-sling-resourceresolver/blob/a314ef3ce2e826bfde26493738ed94316c18bfbf/src/main/java/org/apache/sling/resourceresolver/impl/mapping/ResourceMapperImpl.java#L246 > ConcurrentModificationException in ResourceMapperImpl.readAliases() > ------------------------------------------------------------------- > > Key: SLING-12160 > URL: https://issues.apache.org/jira/browse/SLING-12160 > Project: Sling > Issue Type: Bug > Components: ResourceResolver > Affects Versions: Resource Resolver 1.7.10 > Reporter: Konrad Windszus > Priority: Major > > I have seen the following exception with Resource Resolver 1.7.10 triggered > by calling {{ResourceResolver.map(...)}} > {code} > java.util.ConcurrentModificationException > at > java.base/java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:719) > at > java.base/java.util.LinkedHashMap$LinkedEntryIterator.next(LinkedHashMap.java:751) > at > java.base/java.util.LinkedHashMap$LinkedEntryIterator.next(LinkedHashMap.java:749) > at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133) > at > java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) > at > java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) > at > java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) > at > java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) > at > java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) > at > java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) > at > org.apache.sling.resourceresolver.impl.mapping.ResourceMapperImpl.readAliases(ResourceMapperImpl.java:249) > at > org.apache.sling.resourceresolver.impl.mapping.ResourceMapperImpl.loadAliasesIfApplicable(ResourceMapperImpl.java:209) > at > org.apache.sling.resourceresolver.impl.mapping.ResourceMapperImpl.getAllMappings(ResourceMapperImpl.java:147) > at > org.apache.sling.resourceresolver.impl.mapping.ResourceMapperImpl.getMapping(ResourceMapperImpl.java:73) > at > org.apache.sling.resourceresolver.impl.ResourceResolverImpl.map(ResourceResolverImpl.java:444) > at > org.apache.sling.resourceresolver.impl.ResourceResolverImpl.map(ResourceResolverImpl.java:431) > {code} -- This message was sent by Atlassian Jira (v8.20.10#820010)