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Konrad Windszus commented on FELIX-6402: ---------------------------------------- PR at [https://github.com/apache/felix-dev/pull/74.] [~cziegeler] Can you have a look? > ConcurrentModificationException results in null value while converting to an > array > ---------------------------------------------------------------------------------- > > Key: FELIX-6402 > URL: https://issues.apache.org/jira/browse/FELIX-6402 > Project: Felix > Issue Type: Bug > Components: Converter > Affects Versions: converter-1.0.14 > Reporter: Carsten Ziegeler > Priority: Minor > Fix For: converter-1.0.16 > > > As reported in SLING-10273 it sometimes happens that a conversion to a > String[] results in "null" to be returned by the converter. According to the > spec, a converter will always return a String array (might be empty). > This got traced down in the issue to a ConcurrentModificationException (see > below) which is catched at [1] and then null is returned. > It is probably better to raise a ConversionException in this case to make the > problem known to the caller - and also avoiding the unexpected null return > value > [1] > https://github.com/apache/felix-dev/blob/master/converter/converter/src/main/java/org/osgi/util/converter/ConvertingImpl.java#L312 > {noformat} > java.util.ConcurrentModificationException > at > java.base/java.util.HashMap$HashIterator.nextNode(HashMap.java:1493) > at java.base/java.util.HashMap$KeyIterator.next(HashMap.java:1516) > at > org.osgi.util.converter.ConvertingImpl.convertToArray(ConvertingImpl.java:306) > at org.osgi.util.converter.ConvertingImpl.to(ConvertingImpl.java:207) > at > org.osgi.util.converter.CustomConverterImpl$ConvertingWrapper.to(CustomConverterImpl.java:183) > at > org.osgi.util.converter.CustomConverterImpl$ConvertingWrapper.to(CustomConverterImpl.java:151) > at > org.osgi.util.converter.CustomConverterImpl$ConvertingWrapper.to(CustomConverterImpl.java:139) > at > org.apache.sling.auth.core.impl.SlingAuthenticatorServiceListener.modifiedService(SlingAuthenticatorServiceListener.java:369) > at > org.apache.sling.auth.core.impl.SlingAuthenticatorServiceListener.process(SlingAuthenticatorServiceListener.java:280) > at > org.apache.sling.auth.core.impl.SlingAuthenticatorServiceListener.processQueue(SlingAuthenticatorServiceListener.java:257) > at > org.apache.sling.auth.core.impl.SlingAuthenticatorServiceListener.lambda$schedule$0(SlingAuthenticatorServiceListener.java:166) > at > java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) > at > java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) > at java.base/java.lang.Thread.run(Thread.java:834) > {noformat} -- This message was sent by Atlassian Jira (v8.3.4#803005)