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https://issues.apache.org/jira/browse/SOLR-2187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12923954#action_12923954
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Grant Ingersoll commented on SOLR-2187:
---------------------------------------

bq. enable the unmapHack if its supported (MMapDirectory.UNMAP_SUPPORTED). This 
is the default in 4.x, but not in 3.x. Might want to do this one by default, if 
its supported.

What do you think should be the behavior if setting it fails?  Should we fail 
completely (i.e. let the exception percolate up) or should we catch it, log it 
and still provide the MMapDirectory, just w/o the unmap.  Seems like, in this 
case, we should just log it, but others are often of the opinion that we should 
fail for these kinds of things.


> Provide more DirectoryFactory implementations for the various different 
> Directories
> -----------------------------------------------------------------------------------
>
>                 Key: SOLR-2187
>                 URL: https://issues.apache.org/jira/browse/SOLR-2187
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Grant Ingersoll
>            Assignee: Grant Ingersoll
>            Priority: Minor
>             Fix For: 3.1, 4.0
>
>         Attachments: SOLR-2187.patch
>
>


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