[jira] [Created] (SOLR-12924) Optimize JavabinCodec to use byte[] backed CHarSequence instead of String

["Noble Paul (JIRA)" <ji...@apache.org>]

Noble Paul created SOLR-12924:
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             Summary: Optimize JavabinCodec to use byte[] backed CHarSequence instead of String
                 Key: SOLR-12924
                 URL: https://issues.apache.org/jira/browse/SOLR-12924
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Noble Paul


javabin format uses {{UTF8}} format for String serialization and java Strings are {{UTF16}} and java String always days a buffer copy of those {{UTF16}} input.

So, what I propose is 
* we create a byte[] backed {{CharSequence}} implementation.
* Optionally, javabinCodec can should be able to return this CharSequence instead of all Strings
* If a {{charAt()}} or {{toString()}} call is made to this {{CharSequence}} we create a String and cache it
* When this {{CharSequence needs to be serialized again in javabin format it should copy the underlying utf8 byte[]





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