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Posted to dev@lucene.apache.org by "Shikhar Bhushan (JIRA)" <ji...@apache.org> on 2013/05/13 18:13:16 UTC
[jira] [Updated] (LUCENE-4998) be more precise about IOContext for
reads
[ https://issues.apache.org/jira/browse/LUCENE-4998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Shikhar Bhushan updated LUCENE-4998:
------------------------------------
Attachment: LUCENE-4998.patch
> be more precise about IOContext for reads
> -----------------------------------------
>
> Key: LUCENE-4998
> URL: https://issues.apache.org/jira/browse/LUCENE-4998
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Shikhar Bhushan
> Priority: Minor
> Fix For: 5.0, 4.4
>
> Attachments: LUCENE-4998.patch
>
>
> Set the context as {{IOContext.READ}} / {{IOContext.READONCE}} where applicable
> ----
> Motivation:
> Custom {{PostingsFormat}} may want to check the context on {{SegmentReadState}} and branch differently, but for this to work properly the context has to be specified correctly up the stack.
> For example, {{DirectPostingsFormat}} only loads postings into memory if the {{context != MERGE}}. However a better condition would be {{context == Context.READ && !context.readOnce}}.
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