Shai Erera created LUCENE-5636:
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Summary: SegmentCommitInfo continues to list unneeded gen'd files
Key: LUCENE-5636
URL: https://issues.apache.org/jira/browse/LUCENE-5636
Project: Lucene - Core
Issue Type: Bug
Components: core/index
Reporter: Shai Erera
Assignee: Shai Erera
Priority: Critical
I thought I handled it in LUCENE-5246, but turns out I didn't handle it fully.
I'll upload a patch which improves the test to expose the bug. I know where it
is, but I'm not sure how to fix it without breaking index back-compat. Can we
do that on experimental features?
The problem is that if you update different fields in different gens, the
FieldInfos files of older gens remain referenced (still!!). I open a new issue
since LUCENE-5246 is already resolved and released, so don't want to mess up
our JIRA...
The severity of the bug is that unneeded files are still referenced in the
index. Everything still works correctly, it's just that .fnm files are still
there. But as I wrote, I'm still not sure how to solve it without requiring
apps that use dv updates to reindex.
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