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From "Andrzej Bialecki (JIRA)" <>
Subject [jira] Commented: (NUTCH-610) Can't Update or modify an index while web gui is running
Date Mon, 11 Feb 2008 19:01:39 GMT


Andrzej Bialecki  commented on NUTCH-610:

Based on your description (the patch is hard to read due to unrelated whitespace changes),
this is not the right solution. Creating a Searcher is a heavy operation, and should be done
as rarely as possible, otherwise this will cause a dramatic performance hit.

For DistributedSearch there is already a solution (see NUTCH-581), a similar solution could
be implemented for the local searcher (or individual search servers locally), i.e. define
a "magic" file name that causes the server to reload its indexes. Or implement an additional
RPC call to do the same.

> Can't Update or modify an index while web gui is running
> --------------------------------------------------------
>                 Key: NUTCH-610
>                 URL:
>             Project: Nutch
>          Issue Type: Improvement
>          Components: searcher, web gui
>    Affects Versions: 0.9.0
>            Reporter: Ciminera Frederic
>         Attachments: NutchBeanNoLock.patch
> When the search web application is started a NutchBean is created and initializes its
searcher on the index files (and also a FetchedSegment on segments).
> This index searcher (and also FetchedSegment) is holding a lock on the files on disk
that prevent the index to be updated or modified.
> It would be nice to be able to update an index without having to restart the web server.

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