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Message-ID: <984CACE488D548CE9A54B542AE6C9388@sv.us.sonicwall.com>
From: "Ganesh" <emailgane@yahoo.co.in>
To: <java-user@lucene.apache.org>
References: <28D110F765B04EFD8978C9661602E201@sv.us.sonicwall.com>
 <CAEY5pxV_7XD3NJ0bRrxoPQXYvS-3fga5eqbJ6hqWaQObY+nxPw@mail.gmail.com>
Subject: Re: upgrading from 3.0.3 to 3.5.0
Date: Wed, 1 Feb 2012 15:26:19 +0530
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Thanks Ian.

>>The deprecation warning in the javadocs says "Please pass an =
ExecutorService to IndexSearcher, instead" so I'd do that.
I may need to use IndexSearcher(Reader, ExecutorService). I have sharded =
my index. Say if i have 10 indexes then i will have 10 IndexSearchers. =
How to use this API. It takes one Reader and ExecutorService.=20

What about using IndexSearcher(ParallelReader)?

>>Regarding optimization?
I have sharded to multiple small indexes (in a single system). This =
helps to do faster indexing. I have updates every couple of minutes and =
the updates will go in latest shard. All shards will be optimized per =
day. If lucene performs well in searching multiple segment then i don't =
need to go for shards. I could very well use single index and don't =
optimize it. Whether it will impact search? Previous releases perform =
better in optimized indexes. What about 3.5.0?

Regards
Ganesh =20


----- Original Message -----=20
From: "Ian Lea" <ian.lea@gmail.com>
To: <java-user@lucene.apache.org>
Sent: Wednesday, February 01, 2012 3:07 PM
Subject: Re: upgrading from 3.0.3 to 3.5.0


> I am upgrading from 3.0.3 to 3.5.0.
>
> 1) NumberTools is deprecated. I am converting long to string and =
storing it in Index. Now this is deprecated. If i replace this API with =
NumericUtils / NumericField, will it work for existing index? Whether i =
need to rebuild the index?

You will need to rebuild if you switch to using NumericField.

> 2) I am using ParallelMultiSearcher. This is now deprecated. Whether i =
should use ParallelReader / IndexSearcher (reader, subreaders)?

The deprecation warning in the javadocs says "Please pass an
ExecutorService to IndexSearcher, instead" so I'd do that.

> 3) Optimize method is deprecated. The help says "This method has been =
deprecated, as it is horribly inefficient and very rarely justified. =
Lucene's multi-segment search performance has improved over time, and =
the default TieredMergePolicy now targets segments with deletions."
> This means usage of this method is not justified any more. I am doing =
optimization once per day. Is that not required now.

No.


--
Ian.

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