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https://issues.apache.org/jira/browse/LUCENE-9500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17189332#comment-17189332
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Adrien Grand commented on LUCENE-9500:
--------------------------------------
I just attached the test and test data I used that recreates the issue. I get
the following output:
{noformat}
Compressed to 115 bytes
First mismatch byte 0
First original bytes [c0 9a e2 81 24 d5 fc 9 9 49 f c0 9a e2 81 24 d5 fc 9 9 49
f c0 9a e2 81 24 d5 fc 9]
First restored bytes [9 9 49 f c0 9a e2 81 24 d5 fc 9 9 49 f c0 9a e2 81 24 d5
fc 9 9 49 f c0 9a e2 81]
Exception in thread "main" java.lang.Error
at PresetDictTest.main(PresetDictTest.java:87)
{noformat}
If I remove the call to setDictionary on the compression side, then no error.
> Did we hit a DEFLATE bug?
> -------------------------
>
> Key: LUCENE-9500
> URL: https://issues.apache.org/jira/browse/LUCENE-9500
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Adrien Grand
> Priority: Minor
> Attachments: PresetDictTest.java, test_data.txt
>
>
> I've been digging
> [https://ci-builds.apache.org/job/Lucene/job/Lucene-Solr-NightlyTests-master/23/]
> all day and managed to isolate a simple reproduction that shows the problem.
> I've been starring at it all day and can't find what we are doing wrong,
> which makes me wonder whether we're calling DEFLATE the wrong way or whether
> we hit a DEFLATE bug. I've looked at it so much that I may be missing the
> most obvious stuff.
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