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https://issues.apache.org/jira/browse/LUCENE-2881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Busch updated LUCENE-2881:
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Attachment: lucene-2881.patch
I fixed a bug in FieldInfos that could lead to wrong field numbers, that might
have been related to the wrong behavior you're seeing, Simon.
About codecIds: I made the fix to FieldInfo.clone() to set the codecId on the
clone. I also made FieldInfo.codecId private and added getter and setter. The
setter checks whether the new value for codecId is different from the previous
one, and throws in exception in that case (unless it was set to the default 0
before, which I think means Preflex codec).
All tests pass. Please let me know if that fixes your problem. If not then
you should at least see the new exception that I added, which might make
debugging easier.
> Track FieldInfo per segment instead of per-IW-session
> -----------------------------------------------------
>
> Key: LUCENE-2881
> URL: https://issues.apache.org/jira/browse/LUCENE-2881
> Project: Lucene - Java
> Issue Type: Improvement
> Affects Versions: Realtime Branch, CSF branch, 4.0
> Reporter: Simon Willnauer
> Assignee: Michael Busch
> Fix For: Realtime Branch, CSF branch, 4.0
>
> Attachments: lucene-2881.patch, lucene-2881.patch, lucene-2881.patch,
> lucene-2881.patch
>
>
> Currently FieldInfo is tracked per IW session to guarantee consistent global
> field-naming / ordering. IW carries FI instances over from previous segments
> which also carries over field properties like isIndexed etc. While having
> consistent field ordering per IW session appears to be important due to bulk
> merging stored fields etc. carrying over other properties might become
> problematic with Lucene's Codec support. Codecs that rely on consistent
> properties in FI will fail if FI properties are carried over.
> The DocValuesCodec (DocValuesBranch) for instance writes files per segment
> and field (using the field id within the file name). Yet, if a segment has no
> DocValues indexed in a particular segment but a previous segment in the same
> IW session had DocValues, FieldInfo#docValues will be true since those
> values are reused from previous segments.
> We already work around this "limitation" in SegmentInfo with properties like
> hasVectors or hasProx which is really something we should manage per Codec &
> Segment. Ideally FieldInfo would be managed per Segment and Codec such that
> its properties are valid per segment. It also seems to be necessary to bind
> FieldInfoS to SegmentInfo logically since its really just per segment
> metadata.
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