[jira] [Created] (LUCENE-10251) Add the compliant "Direct" doc-value format

["spike liu (Jira)" <ji...@apache.org>]

spike liu created LUCENE-10251:
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             Summary: Add the compliant "Direct" doc-value format
                 Key: LUCENE-10251
                 URL: https://issues.apache.org/jira/browse/LUCENE-10251
             Project: Lucene - Core
          Issue Type: Improvement
          Components: core/codecs
    Affects Versions: 10.0 (main)
            Reporter: spike liu
         Attachments: compliant_direct_doc-value_format.patch

In an effort to keep the "Direct" doc-value format, which are used in our business scenario, in future release we moved them to doc-value iterators. Any review would be appreciated.

Main changes includes:
 * Use **docValues instead of legacy**.java in DirectDocValuesProducer;
 * Embed iterator implementation inside DirectDocValuesConsumer for code reuse;

P.S. Our business scenario:
 * Save the inventory in Direct doc-value format;
 * Update them in memory with high-frequency;



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