deprecated char[] based collation factories / replace with byte[]-based
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Key: SOLR-2396
URL: https://issues.apache.org/jira/browse/SOLR-2396
Project: Solr
Issue Type: Improvement
Reporter: Robert Muir
Fix For: 4.0
Attachments: SOLR-2396.patch
In LUCENE-2551 collation support was changed to use byte[] keys.
Previously it encoded sort keys with IndexableBinaryString into char[],
but this is wasteful with regards to RAM and disk when terms can be byte.
A simple solution is to create tokenizer factories which are KeywordTokenizer +
[ICU]CollationAttributeFactory.
A better solution would be [ICU]CollationFieldTypes, as this would allow
locale-sensitive
range queries, but I found this to be more difficult due to the fact that the
indexed values
are byte[] not String...
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