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Posted to dev@lucene.apache.org by "Michael McCandless (Resolved) (JIRA)" <ji...@apache.org> on 2012/03/20 16:49:39 UTC
[jira] [Resolved] (LUCENE-1948) Deprecating InstantiatedIndexWriter
[ https://issues.apache.org/jira/browse/LUCENE-1948?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael McCandless resolved LUCENE-1948.
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Resolution: Fixed
> Deprecating InstantiatedIndexWriter
> -----------------------------------
>
> Key: LUCENE-1948
> URL: https://issues.apache.org/jira/browse/LUCENE-1948
> Project: Lucene - Java
> Issue Type: Task
> Components: modules/other
> Affects Versions: 2.9
> Reporter: Karl Wettin
> Assignee: Karl Wettin
> Fix For: 4.0
>
> 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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