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https://issues.apache.org/jira/browse/LUCENE-5622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13976610#comment-13976610
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Dawid Weiss commented on LUCENE-5622:
-------------------------------------
I see that some of these are randomized, the seed I used was 4BCBDFFC4832769F.
{code}
private static IndexUpgrader newIndexUpgrader(Directory dir) {
final boolean streamType = random().nextBoolean();
...
case 1: return new IndexUpgrader(dir, TEST_VERSION_CURRENT,
streamType ? null : System.err, false);
{code}
Don't know what it does or why it's needed -- Robert, could you address the
failing test cases?
> Fail tests if they print, and tests.verbose is not set
> ------------------------------------------------------
>
> Key: LUCENE-5622
> URL: https://issues.apache.org/jira/browse/LUCENE-5622
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Robert Muir
> Assignee: Dawid Weiss
> Attachments: LUCENE-5622.patch, LUCENE-5622.patch
>
>
> Some tests print so much stuff they are now undebuggable (see LUCENE-5612).
> I think its bad that the testrunner hides this stuff, we used to stay on top
> of it. Instead, whne tests.verbose is false, we should install a printstreams
> (system.out/err) that fail the test instantly because they are noisy.
> This will ensure that our tests don't go out of control.
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