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https://issues.apache.org/jira/browse/HBASE-28556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17844551#comment-17844551
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Hudson commented on HBASE-28556:
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Results for branch branch-2
[build #1050 on
builds.a.o|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/1050/]:
(/) *{color:green}+1 overall{color}*
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(/) {color:green}+1 source release artifact{color}
-- See build output for details.
(/) {color:green}+1 client integration test{color}
> Reduce memory copying in Rest server when serializing CellModel to Protobuf
> ---------------------------------------------------------------------------
>
> Key: HBASE-28556
> URL: https://issues.apache.org/jira/browse/HBASE-28556
> Project: HBase
> Issue Type: Improvement
> Components: REST
> Reporter: Istvan Toth
> Assignee: Istvan Toth
> Priority: Minor
> Labels: pull-request-available
> Fix For: 2.4.18, 3.0.0, 2.7.0, 2.6.1, 2.5.9
>
>
> The REST server does a lot of unneccessary coping, which could be avoided at
> least for protobuf encoding.
> - -It uses ByteStringer to handle ByteBuffer backed Cells. However, it uses
> the client API, so it should never encounter ByteBuffer backed cells.-
> - It clones everything from the cells (sometimes multiple times) before
> serializing to protbuf.
> We could mimic the structure in Cell, with array, offset and length for each
> field, in CellModel and use the appropriate protobuf setters to avoid the
> extra copies.
> There may or may not be a way to do the same for JSON and XML via jax-rs, I
> don't know the frameworks well enough to tell, but if not, we could just do
> the copying in the getters for them, which would not make things worse.
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