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https://issues.apache.org/jira/browse/LUCENE-3203?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless updated LUCENE-3203:
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Attachment: LUCENE-3203.patch
New patch, applies to the IOContext branch. I think it's committable!
It adds set/getMaxMergeWriteMBPerSec methods to FSDirectory.
> Rate-limit IO used by merging
> -----------------------------
>
> Key: LUCENE-3203
> URL: https://issues.apache.org/jira/browse/LUCENE-3203
> Project: Lucene - Java
> Issue Type: Improvement
> Components: core/store
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 3.3, 4.0
>
> Attachments: LUCENE-3203.patch, LUCENE-3203.patch
>
>
> Large merges can mess up searches and increase NRT reopen time (see
> http://blog.mikemccandless.com/2011/06/lucenes-near-real-time-search-is-fast.html).
> A simple rate limiter improves the spikey NRT reopen times during big
> merges, so I think we should somehow make this possible. Likely this
> would reduce impact on searches as well.
> Typically apps that do indexing and searching on same box are in no
> rush to see the merges complete so this is a good tradeoff.
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