Re: [JENKINS] Lucene-nightly-main-Linux (64bit/hotspot/jdk-26) - Build # 1728 - Unstable!

Ignacio Vera <[email protected]> Fri, 19 Jun 2026 11:32:24 +0100
Newsgroups gmane.comp.jakarta.lucene.devel
Message-ID <CAKryLwuvGaLQDDgWxTxb-4dCT_c61Ji8dot==TWiioRb+7HCmg@mail.gmail.com>
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Or maybe just a missing commit after indexing the data.

On Fri, Jun 19, 2026 at 10:56=E2=80=AFAM Ignacio Vera <[email protected]> w=
rote:

> My guess is that there is an off by 1 bug somewhere that only manifests i=
n
> 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=E2=80=AFAM Dawid Weiss <[email protected]=
om>
> 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=E2=80=AFAM Alan Woodward <romseygeek@gmail=
.com>
>> wrote:
>>
>>> Yeah this is weird - it=E2=80=99s failing in almost every nightly run i=
n the
>>> elastic CI as well and is completely unreproducible.  I=E2=80=99ve trie=
d tracing
>>> things through and haven=E2=80=99t found any non-deterministic stuff in=
 there
>>> either (there=E2=80=99s 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=E2=80=AFPM Policeman Jenkins Server via b=
uilds <
>>> [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.testDuelW=
ithStandardDisjunction
>>>>
>>>> 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.testDuelW=
ithStandardDisjunction(TestSortedDvMultiRangeQuery.java:154)
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: [email protected]
>>>> For additional commands, e-mail: [email protected]
>>>
>>>
>>>

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<div dir=3D"ltr">Or maybe just a missing commit after indexing the data.</d=
iv><br><div class=3D"gmail_quote gmail_quote_container"><div dir=3D"ltr" cl=
ass=3D"gmail_attr">On Fri, Jun 19, 2026 at 10:56=E2=80=AFAM Ignacio Vera &l=
t;<a href=3D"mailto:[email protected]">[email protected]</a>&gt; wrote:<br>=
</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;b=
order-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">My=
 guess is that there is an off by 1 bug somewhere that only manifests in ve=
ry specific segment layouts. Because we are not using the SerialMergeSchedu=
ler, every run might produce a different segment layout.</div><br><div clas=
s=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, Jun 19, 202=
6 at 10:30=E2=80=AFAM Dawid Weiss &lt;<a href=3D"mailto:[email protected]=
om" target=3D"_blank">[email protected]</a>&gt; wrote:<br></div><blockq=
uote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1p=
x solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><br><div>I susp=
ect it&#39;s a race somewhere that only manifests itself on a slower machin=
e (ci workers).=C2=A0</div><div><br>D.</div></div><br><div class=3D"gmail_q=
uote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, Jun 19, 2026 at 11:00=
=E2=80=AFAM Alan Woodward &lt;<a href=3D"mailto:[email protected]" targe=
t=3D"_blank">[email protected]</a>&gt; wrote:<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rg=
b(204,204,204);padding-left:1ex"><div>Yeah this is weird - it=E2=80=99s fai=
ling in almost every nightly run in the elastic CI as well and is completel=
y unreproducible.=C2=A0 I=E2=80=99ve tried tracing things through and haven=
=E2=80=99t found any non-deterministic stuff in there either (there=E2=80=
=99s no threading or anything that I can see?)<br id=3D"m_-3407224357391756=
384m_-3474052170346005485m_-958436218376695176lineBreakAtBeginningOfMessage=
"><div><br><blockquote type=3D"cite"><div>On 19 Jun 2026, at 09:49, Dawid W=
eiss &lt;<a href=3D"mailto:[email protected]" target=3D"_blank">dawid.w=
[email protected]</a>&gt; wrote:</div><br><div><div dir=3D"ltr"><br><div>I cou=
ldn&#39;t reproduce this.</div></div><br><div class=3D"gmail_quote"><div di=
r=3D"ltr" class=3D"gmail_attr">On Thu, Jun 18, 2026 at 10:51=E2=80=AFPM Pol=
iceman Jenkins Server via builds &lt;<a href=3D"mailto:[email protected]=
.org" target=3D"_blank">[email protected]</a>&gt; wrote:<br></div><b=
lockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-le=
ft:1px solid rgb(204,204,204);padding-left:1ex">Build: <a href=3D"https://j=
enkins.thetaphi.de/job/Lucene-nightly-main-Linux/1728/" rel=3D"noreferrer" =
target=3D"_blank">https://jenkins.thetaphi.de/job/Lucene-nightly-main-Linux=
/1728/</a><br>
Java: 64bit/hotspot/jdk-26 -XX:-UseCompressedOops -XX:+UseParallelGC<br>
<br>
1 tests failed.<br>
FAILED:=C2=A0 org.apache.lucene.sandbox.search.TestSortedDvMultiRangeQuery.=
testDuelWithStandardDisjunction<br>
<br>
Error Message:<br>
java.lang.AssertionError: expected:&lt;1645 hits&gt; but was:&lt;1647 hits&=
gt;<br>
<br>
Stack Trace:<br>
java.lang.AssertionError: expected:&lt;1645 hits&gt; but was:&lt;1647 hits&=
gt;<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 at __randomizedtesting.SeedInfo.seed([37A90FC76=
975A75D:B5AAD60471E69299]:0)<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 at [email protected]/org.junit.Assert.fail(Assert.ja=
va:89)<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 at [email protected]/org.junit.Assert.failNotEquals(=
Assert.java:835)<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 at [email protected]/org.junit.Assert.assertEquals(A=
ssert.java:120)<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 at [email protected]/org.junit.Assert.assertEquals(A=
ssert.java:146)<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 at org.apache.lucene.sandbox.search.TestSortedD=
vMultiRangeQuery.testDuelWithStandardDisjunction(TestSortedDvMultiRangeQuer=
y.java:154)<br>
<br>
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v>
</div></blockquote></div><br></div></blockquote></div>
</blockquote></div>
</blockquote></div>

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