[jira] [Assigned] (LUCENE-3605) revisit segments.gen sleeping

["Michael McCandless (Assigned) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-3605?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless reassigned LUCENE-3605:
------------------------------------------

    Assignee: Michael McCandless
    
> revisit segments.gen sleeping
> -----------------------------
>
>                 Key: LUCENE-3605
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3605
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Robert Muir
>            Assignee: Michael McCandless
>         Attachments: LUCENE-3605.patch
>
>
> in LUCENE-3601, i worked up a change where we intentionally crash() all un-fsynced files 
> in tests to ensure that we are calling sync on files when we should.
> I think this would be nice to do always (and with some fixes all tests pass).
> But this is super-slow sometimes because when we corrupt the unsynced segments.gen, it causes
> SIS.read to take 500ms each time (and in checkindex for some reason we do this twice, which seems wrong).
> I can workaround this for now for tests (just do a partial crash that avoids corrupting the segments.gen),
> but I wanted to create this issue for discussion about the sleeping/non-fsyncing of segments.gen, just
> because i guess its possible someone could hit this slowness.
>  

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