[
https://issues.apache.org/jira/browse/LUCENE-9322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17220027#comment-17220027
]
Tomoko Uchida commented on LUCENE-9322:
---------------------------------------
I encountered a test failure in TestVectorValues that can be reproduced with
this seed on my Linux PC (Fedora) and Java 11:
{code}
$ ./gradlew :lucene:core:test --tests
"org.apache.lucene.index.TestVectorValues" -Ptests.seed=BA5BA0B8B98813F2
org.apache.lucene.index.TestVectorValues > testSortedIndex FAILED
java.lang.AssertionError: expected:<3> but was:<2>
at
__randomizedtesting.SeedInfo.seed([BA5BA0B8B98813F2:CDC4C64E81716A26]:0)
at org.junit.Assert.fail(Assert.java:89)
at org.junit.Assert.failNotEquals(Assert.java:835)
at org.junit.Assert.assertEquals(Assert.java:647)
at org.junit.Assert.assertEquals(Assert.java:633)
at
org.apache.lucene.index.TestVectorValues.testSortedIndex(TestVectorValues.java:583)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1754)
at
com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:942)
at
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:978)
at
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:992)
at
org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
at
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
at
org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
at
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
at
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
at
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:819)
at
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:470)
at
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:951)
at
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:836)
at
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:887)
at
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:898)
at
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at
org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
at
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
at
com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at
org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
at
org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
at
org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
at
org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
at
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
at
com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:826)
at java.base/java.lang.Thread.run(Thread.java:834)
{code}
> Discussing a unified vectors format API
> ---------------------------------------
>
> Key: LUCENE-9322
> URL: https://issues.apache.org/jira/browse/LUCENE-9322
> Project: Lucene - Core
> Issue Type: New Feature
> Reporter: Julie Tibshirani
> Priority: Major
> Fix For: master (9.0)
>
> Time Spent: 6h 10m
> Remaining Estimate: 0h
>
> Two different approximate nearest neighbor approaches are currently being
> developed, one based on HNSW (LUCENE-9004) and another based on coarse
> quantization ([#LUCENE-9136]). Each prototype proposes to add a new format to
> handle vectors. In LUCENE-9136 we discussed the possibility of a unified API
> that could support both approaches. The two ANN strategies give different
> trade-offs in terms of speed, memory, and complexity, and it’s likely that
> we’ll want to support both. Vector search is also an active research area,
> and it would be great to be able to prototype and incorporate new approaches
> without introducing more formats.
> To me it seems like a good time to begin discussing a unified API. The
> prototype for coarse quantization
> ([https://github.com/apache/lucene-solr/pull/1314]) could be ready to commit
> soon (this depends on everyone's feedback of course). The approach is simple
> and shows solid search performance, as seen
> [here|https://github.com/apache/lucene-solr/pull/1314#issuecomment-608645326].
> I think this API discussion is an important step in moving that
> implementation forward.
> The goals of the API would be
> # Support for storing and retrieving individual float vectors.
> # Support for approximate nearest neighbor search -- given a query vector,
> return the indexed vectors that are closest to it.
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