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On Fri, 6 Nov 2009 11:02:53 -0500, Michael McCandless <...@mikemccandless.com
Can you use IndexWriter.getReader() to get the reader for step 2?
Failing that, you could simply commit the change, but use a deletion
policy that keeps the old commit alive. Then open a normal reader and
read whatever you need for step 2, and commit the external file. If
an error happens and you need to rollback you can simply open a new
IndexWriter on the old commit point -- this lets you rollback even if
the commit has already happened.
Mike
On Fri, Nov 6, 2009 at 10:59 AM, Peter Keegan <...@gmail.com
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On Fri, 6 Nov 2009 11:22:05 -0500, Peter Keegan <...@gmail.com
Yes - perfect! I didn't think that would be different than refreshing or
recreating an IndexReader.
I don't need to keep the old commit alive. The goal is to keep the external
file in synch with the index, so a separate searcher process will see
consistent data. By postponing both commits, the window where they are out
of synch is very small (2 file renames). I record the Lucene index version
in the external file for checking synchcronization.
Thanks,
Peter
On Fri, Nov 6, 2009 at 11:02 AM, Michael McCandless <
luce...@mikemccandless.com
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On Fri, 6 Nov 2009 11:33:12 -0500, Michael McCandless <...@mikemccandless.com
On Fri, Nov 6, 2009 at 11:22 AM, Peter Keegan <...@gmail.com
Great!
getReader() searches the full index, plus uncommitted changes.
OK.
Mike
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On Fri, 6 Nov 2009 11:35:27 -0500, Peter Keegan <...@gmail.com
Which version of the index will IndexWriter.getReader() return if there have
been updates, but no call to 'prepareCommit'?
On Fri, Nov 6, 2009 at 11:33 AM, Michael McCandless <
luce...@mikemccandless.com
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On Fri, 6 Nov 2009 11:40:45 -0500, Michael McCandless <...@mikemccandless.com
It will always return a reader reflecting every change done with that
writer (plus, the index as it was when the writer was opened) before
getReader was called.
It's unaffected by the call to prepareCommit.
Mike
On Fri, Nov 6, 2009 at 11:35 AM, Peter Keegan <...@gmail.com
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