Yeah excellent! This should indeed work!
Thanks,
Geert-Jan
Jérôme Thièvre wrote:
>
> Hello Geert-Jan,
>
> it's possible to merge several parallel physical indexes (viewed as one
> logical index with a ParallelReader).
> Just use the method IndexWriter.addIndexes(IndexReader[] readers):
>
> IndexReader[] physicalReaders = ...; // Your readers here
>
> IndexWriter iw = new IndexWriter(...);
> ParallelReader parallelReader = new ParallelReader(true);
>
> for(IndexReader reader : physicalReaders)
> parallelReader .add(reader);
>
>
> IndexReader[] readersToMerge = { parallelReader };
> iw.addIndexes(readersToMerge);
> // Optional optimize
> iw.optimize();
> iw.close();
> parallelReader.close();
>
>
> I used this trick to deploy an index made of 4 parallel indexes. Using
> ParallelReader on large indexes is not very efficient for searching ,
> but I need to use parallel indexes because one of them is huge but
> evolve very slowly compared to the others.
>
> Jérôme
>
> Britske a écrit :
>> Given two parallel indexes which contain the same products but different
>> fields, one with slowly changing fields and one with fields which are
>> updated regularly:
>>
>> Is it possible to periodically merge these to form a single index?
>> (thereby
>> representing a frozen snapshot in time)
>>
>> For example: Can indexWriter.addIndexesNoOptimize handle this, or was it
>> (only) designed for merging shards?
>> If not, is there another option (3rd party or not) to use, or would I
>> have
>> to resort to low-level hacking?
>>
>> Thanks,
>> Geert-Jan
>>
>
>
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