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  1. Infinispan
  2. ISPN-7656

DefaultDataContainer.entrySet().stream().toArray(Object[]::new) may fail

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Major Major
    • 9.0.0.Final
    • None
    • Core
    • None

      When the default Spliterator estimates size of the array, it calls DefaultDataContainer.EntrySet#size() that returns directly the size of container (including expired entries). Then the container is iterated using ImmutableEntryIterator which excludes expired entries by default, and this may return less elements than the original size() provided. That causes failure like this:

      java.lang.IllegalStateException: End size 1 is less than fixed size 2
	at java.util.stream.Nodes$FixedNodeBuilder.end(Nodes.java:1232)
	at java.util.stream.Sink$ChainedReference.end(Sink.java:258)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:545)
	at java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
	at java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:438)

      Note that this can also happen without expiration upon concurrent modification. We have to adjust the characteristics (remove #SIZED) of provided spliterators.

              wburns@redhat.com Will Burns
              rvansa1@redhat.com Radim Vansa (Inactive)
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