[jira] Updated: (LUCENE-1948) Deprecating InstantiatedIndexWriter

["Karl Wettin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-1948?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karl Wettin updated LUCENE-1948:
--------------------------------

    Attachment: LUCENE-1948.patch

> Deprecating InstantiatedIndexWriter
> -----------------------------------
>
>                 Key: LUCENE-1948
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1948
>             Project: Lucene - Java
>          Issue Type: Task
>          Components: contrib/*
>    Affects Versions: 2.9
>            Reporter: Karl Wettin
>            Assignee: Karl Wettin
>             Fix For: 3.0
>
>         Attachments: LUCENE-1948.patch
>
>
> http://markmail.org/message/j6ip266fpzuaibf7
> I suppose that should have been suggested before 2.9 rather than  
> after...
> There are at least three reasons to why I want to do this:
> The code is based on the behaviour or the Directory IndexWriter as of  
> 2.3 and I have not been touching it since then. If there will be  
> changes in the future one will have to keep IIW in sync, something  
> that's easy to forget.
> There is no locking which will cause concurrent modification  
> exceptions when accessing the index via searcher/reader while  
> committing.
> It use the old token stream API so it has to be upgraded in case it  
> should stay.
> The java- and package level docs have since it was committed been  
> suggesting that one should consider using II as if it was immutable  
> due to the locklessness. My suggestion is that we make it immutable  
> for real.
> Since II is ment for small corpora there is very little time lost by  
> using the constructor that builts the index from an IndexReader. I.e.  
> rather than using InstantiatedIndexWriter one would have to use a  
> Directory and an IndexWriter and then pass an IndexReader to a new  
> InstantiatedIndex.
> Any objections?

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