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From Jan H√łydahl (JIRA) <>
Subject [jira] [Closed] (SOLR-1524) proposal on distributed search
Date Sat, 23 Mar 2013 00:35:15 GMT


Jan H√łydahl closed SOLR-1524.

    Resolution: Duplicate

Continue discussions in SOLR-1726 which tries to solve the same issue

> proposal on distributed search
> ------------------------------
>                 Key: SOLR-1524
>                 URL:
>             Project: Solr
>          Issue Type: Sub-task
>          Components: clients - java
>            Reporter: johnson.hong
> Hi,all.
>     some days ago,I put a question  that "why it gets slower while keep on increasing
the start value accross distributed search ?".
>     And one reply by Shalin Shekhar Mangar was "distributed  search fetches start+rows
documents from each shard in order to correctly merge the results".
>     After this I read the source code,and I found  query across distributed search would
 be separated into nshards' query.
> Each shard query will be excute as follows:
>         1.get ids of matched documents into DocList        //take little time
>         2.get all documents by id which result in step 1.  //take little time
>         3.write all the documents found to binary string    
>         4.parse the binary string back to SolrDocumentList  // step 4 take almost all
the time used
>  From above,I propose :It is not necessary to execute step 3 and step 4 even step 2,the
ids found is enough to merge results,isn't it?

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