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https://issues.apache.org/jira/browse/DAFFODIL-2704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17554209#comment-17554209
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Steve Lawrence commented on DAFFODIL-2704:
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Via printf debugging, it looks like this is hanging on iter.next() inside our
SimpleNamedServiceLoader.loadClass function–it simply never returns even though
iter.hasNext() returns true. Might be a bug in Java??
> sbt tests are intermittenly hanging
> -----------------------------------
>
> Key: DAFFODIL-2704
> URL: https://issues.apache.org/jira/browse/DAFFODIL-2704
> Project: Daffodil
> Issue Type: Bug
> Reporter: Steve Lawrence
> Priority: Critical
> Fix For: 3.4.0
>
>
> Starting at commit c81b213b02ac414a39290787cf2eea14d83fdc26, running \{sbt
> daffodil-io/test} multiple times will eventually cause it to hang.
> It's not clear to me the cause, but I've confirmed that the hang happens
> somewhere in the SimpleNamedServiceLoader loadClass function. Seems likely
> that it's getting stuck in the while loop and can't break out for some reason.
> I don't think the above commit caused the issue, but it did a new call to
> SimpleNamedServiceLoader, and it loads a lot more classes than the usual use
> of this class. We're probably using service loaders incorrectly in this
> function somehow.
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