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From Michael McCandless <luc...@mikemccandless.com>
Subject Re: Why read past EOF
Date Fri, 03 Feb 2012 16:49:49 GMT
Instead of .getVersion() you should use .getTimestamp()... version is
not "really" a timestamp.  (Though, really, you should store your own
timestamp inside the commit userData, and retrieve that, instead...
the getTimestamp API will be deprecated in 3.6.0).

Also, you may need to implement onInit, in case you close/open a
writer while readers stay open, you still want to ensure the commits
are preserved.

Instead of using "present", I think you should set that to the time of
the last commit.  Ie, you always compare older commits against the
timestamp of the most recent commit.  This way you can use the same
function in onInit and onCommit.

Mike McCandless

http://blog.mikemccandless.com

On Thu, Feb 2, 2012 at 10:17 PM, superruiye <superruiye@gmail.com> wrote:
> eg,I implement IndexDeletionPolicy and the onCommit():
>
>        public void onCommit(List<? extends IndexCommit> commits) {
>                // Note that commits.size() should normally be 2 (if not
>                // called by onInit above):
>                int size = commits.size();
>                long present = System.currentTimeMillis();
>                for (int i = 0; i < size - 1; i++) {
>                        if (present - commits.get(i).getVersion() > deletionPostPone){
> //deletionPostPone=600000
>                                commits.get(i).delete();
>                        }
>                }
>        }
>
> --
> View this message in context: http://lucene.472066.n3.nabble.com/Why-read-past-EOF-tp3639401p3712006.html
> Sent from the Lucene - Java Users mailing list archive at Nabble.com.
>
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