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https://issues.apache.org/jira/browse/LUCENE-8330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Rowe reopened LUCENE-8330:
--------------------------------
My Jenkins found a reproducing seed for a test introduced on this issue:
{noformat}
Checking out Revision 6bbce38b77d5850f2d62d62fe87254e2ac8bd447
(refs/remotes/origin/master)
[...]
[junit4] Suite: org.apache.lucene.index.TestUpgradeIndexMergePolicy
[junit4] 2> NOTE: reproduce with: ant test
-Dtestcase=TestUpgradeIndexMergePolicy
-Dtests.method=testFindForcedDeletesMerges -Dtests.seed=4AD4A3D0C1089705
-Dtests.slow=true -Dtests.locale=mt -Dtests.timezone=Asia/Sakhalin
-Dtests.asserts=true -Dtests.file.encoding=UTF-8
[junit4] FAILURE 0.03s J0 |
TestUpgradeIndexMergePolicy.testFindForcedDeletesMerges <<<
[junit4] > Throwable #1: java.lang.AssertionError: expected:<0> but was:<1>
[junit4] > at
__randomizedtesting.SeedInfo.seed([4AD4A3D0C1089705:97983D3D6996F440]:0)
[junit4] > at
org.apache.lucene.index.BaseMergePolicyTestCase.testFindForcedDeletesMerges(BaseMergePolicyTestCase.java:119)
[junit4] > at java.lang.Thread.run(Thread.java:748)
[junit4] 2> NOTE: test params are: codec=Asserting(Lucene70): {},
docValues:{}, maxPointsInLeafNode=1225, maxMBSortInHeap=7.468841163539708,
sim=Asserting(org.apache.lucene.search.similarities.AssertingSimilarity@1da73756),
locale=mt, timezone=Asia/Sakhalin
[junit4] 2> NOTE: Linux 4.1.0-custom2-amd64 amd64/Oracle Corporation
1.8.0_151 (64-bit)/cpus=16,threads=1,free=150534024,total=331350016
{noformat}
> Detach IndexWriter from MergePolicy
> -----------------------------------
>
> Key: LUCENE-8330
> URL: https://issues.apache.org/jira/browse/LUCENE-8330
> Project: Lucene - Core
> Issue Type: Improvement
> Affects Versions: 7.4, master (8.0)
> Reporter: Simon Willnauer
> Assignee: Simon Willnauer
> Priority: Major
> Fix For: 7.4, master (8.0)
>
> Attachments: LUCENE-8330.patch, LUCENE-8330.patch, LUCENE-8330.patch,
> LUCENE-8330.patch
>
>
> This change introduces a new MergePolicy.MergeContext interface
> that is easy to mock and cuts over all instances of IW to MergeContext.
> Since IW now implements MergeContext the cut over is straight forward.
> This reduces the exposed API available in MP dramatically and allows
> efficient testing without relying on IW to improve the coverage and
> testability of our MP implementations.
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