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

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

     [ https://issues.apache.org/jira/browse/SOLR-12924?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Noble Paul updated SOLR-12924:
------------------------------
    Summary: Optimize JavabinCodec to use byte[] backed CharSequence instead of String  (was: Optimize JavabinCodec to use byte[] backed CHarSequence instead of String)

> 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
>            Priority: Major
>
> 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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