[jira] [Created] (LUCENE-7029) We need a better way to retrieve many documents at same time

["Jacek Migdal (JIRA)" <ji...@apache.org>]

Jacek Migdal created LUCENE-7029:
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             Summary: We need a better way to retrieve many documents at same time
                 Key: LUCENE-7029
                 URL: https://issues.apache.org/jira/browse/LUCENE-7029
             Project: Lucene - Core
          Issue Type: New Feature
          Components: core/codecs, core/index
            Reporter: Jacek Migdal


My use case involve that in some situations I need to get a lot of documents from the index. Most of my documents are small (less than 2KB).

I use API: IndexReader.document(id, visitor), but I noticed it keeps decompressing same block over and over again.

If we have an api that let's me get many documents at once, I could do the same job way faster.

After some experiment I realized I can get 2x+ gains on performance with this simple feature.

Disclaimer: I'm a newbie to lucene project. I truly appreciate hard work by all contributors for this awesome library. I would be more than happy to contribute back and get my hands dirty. Any help and pointers is more than welcomed.



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