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https://issues.apache.org/jira/browse/HDDS-14647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18072056#comment-18072056
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Chen-Jheng Sing commented on HDDS-14647:
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Hi [~szetszwo] ,
Thanks for the follow-up.
I haven’t started the benchmark yet, but I’m planning to run it and will share
the results once ready.
I’ll also send you an email shortly so we can continue the discussion there.
> Umbrella: Improve SCM codec
> ---------------------------
>
> Key: HDDS-14647
> URL: https://issues.apache.org/jira/browse/HDDS-14647
> Project: Apache Ozone
> Issue Type: Improvement
> Components: SCM HA
> Reporter: Tsz-wo Sze
> Assignee: Chen-Jheng Sing
> Priority: Major
>
> The SCM Codec interface and the subclass implements are for
> serialize/deserialize Java objects to/from protobuf ByteString. The current
> implementation is inefficient since the Codec interface it not type specific
> and the implementations use Java reflection to handle the objects. In other
> words,
> - the static object type is available in the beginning
> - but, since the parameter is declared by Object, the type is forgotten,
> - then the Codec implementations use reflection to find out the type in
> runtime.
> A better way to use generic type in the Codec interface and a Codec
> implementation only has to handle a specific class. This idea is similar to
> org.apache.hadoop.hdds.utils.db.Codec<T>.
> BTW, we should rename classes in org.apache.hadoop.hdds.scm.ha.io.* to avoid
> confusion with the classes in org.apache.hadoop.hdds.utils.db.*.
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