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https://issues.apache.org/jira/browse/LUCENE-3108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13046473#comment-13046473
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Uwe Schindler commented on LUCENE-3108:
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One small issue:
There seems to be a merge missing in file TestIndexSplitter, the changes in
there are unrelated, so this reverts a commit on trunk for improving tests.
The problem with the README.txt is already fixed.
...still digging
> Land DocValues on trunk
> -----------------------
>
> Key: LUCENE-3108
> URL: https://issues.apache.org/jira/browse/LUCENE-3108
> Project: Lucene - Java
> Issue Type: Task
> Components: core/index, core/search, core/store
> Affects Versions: CSF branch, 4.0
> Reporter: Simon Willnauer
> Assignee: Simon Willnauer
> Fix For: 4.0
>
> Attachments: LUCENE-3108.patch, LUCENE-3108.patch, LUCENE-3108.patch,
> LUCENE-3108_CHANGES.patch
>
>
> Its time to move another feature from branch to trunk. I want to start this
> process now while still a couple of issues remain on the branch. Currently I
> am down to a single nocommit (javadocs on DocValues.java) and a couple of
> testing TODOs (explicit multithreaded tests and unoptimized with deletions)
> but I think those are not worth separate issues so we can resolve them as we
> go.
> The already created issues (LUCENE-3075 and LUCENE-3074) should not block
> this process here IMO, we can fix them once we are on trunk.
> Here is a quick feature overview of what has been implemented:
> * DocValues implementations for Ints (based on PackedInts), Float 32 / 64,
> Bytes (fixed / variable size each in sorted, straight and deref variations)
> * Integration into Flex-API, Codec provides a
> PerDocConsumer->DocValuesConsumer (write) / PerDocValues->DocValues (read)
> * By-Default enabled in all codecs except of PreFlex
> * Follows other flex-API patterns like non-segment reader throw UOE forcing
> MultiPerDocValues if on DirReader etc.
> * Integration into IndexWriter, FieldInfos etc.
> * Random-testing enabled via RandomIW - injecting random DocValues into
> documents
> * Basic checks in CheckIndex (which runs after each test)
> * FieldComparator for int and float variants (Sorting, currently directly
> integrated into SortField, this might go into a separate DocValuesSortField
> eventually)
> * Extended TestSort for DocValues
> * RAM-Resident random access API plus on-disk DocValuesEnum (currently only
> sequential access) -> Source.java / DocValuesEnum.java
> * Extensible Cache implementation for RAM-Resident DocValues (by-default
> loaded into RAM only once and freed once IR is closed) -> SourceCache.java
>
> PS: Currently the RAM resident API is named Source (Source.java) which seems
> too generic. I think we should rename it into RamDocValues or something like
> that, suggestion welcome!
> Any comments, questions (rants :)) are very much appreciated.
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