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https://issues.apache.org/jira/browse/LUCENE-5164?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler reopened LUCENE-5164:
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> Remove the OOM catching in SimpleFSDirectory and NIOFSDirectory
> ---------------------------------------------------------------
>
> Key: LUCENE-5164
> URL: https://issues.apache.org/jira/browse/LUCENE-5164
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Uwe Schindler
> Assignee: Uwe Schindler
> Attachments: LUCENE-5164.patch, LUCENE-5164.patch, LUCENE-5164.patch,
> LUCENE-5164.patch
>
>
> Followup from LUCENE-5161:
> In former times we added the OOM cactching in NIOFSDir and SimpleFSDir
> because nobody understand why the OOM could happen on FileChannel.read() or
> SimpleFSDir.read(). By reading the Java code its easy to understand (it
> allocates direct buffers with same size as the requested length to read). As
> we have chunking now reduce to a few kilobytes it cannot happen anymore that
> we get spurious OOMs.
> In fact we might hide a *real* OOM! So we should remove it.
> I am also not sure if we should make chunk size configureable in FSDirectory
> at all! It makes no sense to me (it was in fact only added for people that
> hit the OOM to fine-tune).
> In my opinion we should remove the setter in trunk and keep it deprecated in
> 4.x. The buf size is then in trunk equal to the defaults from LUCENE-5161.
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