My guess is that there is an off by 1 bug somewhere that only manifests in very specific segment layouts. Because we are not using the SerialMergeScheduler, every run might produce a different segment layout.
On Fri, Jun 19, 2026 at 10:30 AM Dawid Weiss <[email protected]> wrote: > > I suspect it's a race somewhere that only manifests itself on a slower > machine (ci workers). > > D. > > On Fri, Jun 19, 2026 at 11:00 AM Alan Woodward <[email protected]> > wrote: > >> Yeah this is weird - it’s failing in almost every nightly run in the >> elastic CI as well and is completely unreproducible. I’ve tried tracing >> things through and haven’t found any non-deterministic stuff in there >> either (there’s no threading or anything that I can see?) >> >> On 19 Jun 2026, at 09:49, Dawid Weiss <[email protected]> wrote: >> >> >> I couldn't reproduce this. >> >> On Thu, Jun 18, 2026 at 10:51 PM Policeman Jenkins Server via builds < >> [email protected]> wrote: >> >>> Build: https://jenkins.thetaphi.de/job/Lucene-nightly-main-Linux/1728/ >>> Java: 64bit/hotspot/jdk-26 -XX:-UseCompressedOops -XX:+UseParallelGC >>> >>> 1 tests failed. >>> FAILED: >>> org.apache.lucene.sandbox.search.TestSortedDvMultiRangeQuery.testDuelWithStandardDisjunction >>> >>> Error Message: >>> java.lang.AssertionError: expected:<1645 hits> but was:<1647 hits> >>> >>> Stack Trace: >>> java.lang.AssertionError: expected:<1645 hits> but was:<1647 hits> >>> at >>> __randomizedtesting.SeedInfo.seed([37A90FC76975A75D:B5AAD60471E69299]:0) >>> at [email protected]/org.junit.Assert.fail(Assert.java:89) >>> at [email protected]/org.junit.Assert.failNotEquals(Assert.java:835) >>> at [email protected]/org.junit.Assert.assertEquals(Assert.java:120) >>> at [email protected]/org.junit.Assert.assertEquals(Assert.java:146) >>> at >>> org.apache.lucene.sandbox.search.TestSortedDvMultiRangeQuery.testDuelWithStandardDisjunction(TestSortedDvMultiRangeQuery.java:154) >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: [email protected] >>> For additional commands, e-mail: [email protected] >> >> >>
