Stored-only fields automatically enable norms and tf when added to document
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Key: LUCENE-1590
URL: https://issues.apache.org/jira/browse/LUCENE-1590
Project: Lucene - Java
Issue Type: Bug
Components: Index
Affects Versions: 2.4.1, 2.4, 2.9
Reporter: Uwe Schindler
During updating my internal components to the new TrieAPI, I have seen the
following:
I index a lot of numeric fields with trie encoding omitting norms and term
frequency. This works great. Luke shows that both is omitted.
As I sometimes also want to have the components of the field stored and want to
use the same field name for it. So I add additionally the field again to the
document, but stored only (as the Field c'tor using a TokenStream cannot
additionally store the field). As it is stored only, I thought, that I can left
out explicit setting of omitNorms and omitTermFreqAndPositions. After adding
the stored-only-without-omits field, Luke shows all fields with norms enabled.
I am not sure, if the norms/tf were really added to the index, but Luke shows a
value for the norms and FieldInfo has it enabled.
In my opinion, this is not intuitive, o.a.l.document.Field should switch both
omit* options on when storing fields only (and also disable other indexing-only
options). Alternatively the internal FieldInfo.update(boolean isIndexed,
boolean storeTermVector, boolean storePositionWithTermVector, boolean
storeOffsetWithTermVector, boolean omitNorms, boolean storePayloads, boolean
omitTermFreqAndPositions) should only change the omit* and other options, if
the isIndexed parameter (not this.isIndexed) is also true, elsewhere leave it
as it is.
In principle, when adding a stored-only field, any indexing-specific options
should not be changed in FieldInfo. If the field was indexed with norms before,
norms should stay enabled (but this would be the default as it is).
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