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Posted to dev@lucene.apache.org by "Simon Willnauer (JIRA)" <ji...@apache.org> on 2011/06/03 18:26:47 UTC

[jira] [Commented] (LUCENE-3108) Land DocValues on trunk

    [ https://issues.apache.org/jira/browse/LUCENE-3108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13043446#comment-13043446 ] 

Simon Willnauer commented on LUCENE-3108:
-----------------------------------------

Hey folks,
we are ready for the final review rounds here, I resolved the naming conflict by renaming DocValues to IndexDocValues, fixed all the outstanding documentation issues and added a fixed ints impl that automatically switches over to fixed int/long if packed ints can not handle the range of the values in a field.

I am preparing a review patch now.

> 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
>
>
> 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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