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From "Vincent Poon (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-18026) ProtobufUtil seems to do extra array copying
Date Mon, 15 May 2017 02:30:04 GMT

     [ https://issues.apache.org/jira/browse/HBASE-18026?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vincent Poon updated HBASE-18026:
---------------------------------
    Attachment: HBASE-18026.addendum.patch

[~anoop.hbase] Thanks for the clarification.  Here's an addendum where if it's not a LiteralByteString,
I just do toByteArray().  Seems the behavior should be safe in that case?

> ProtobufUtil seems to do extra array copying
> --------------------------------------------
>
>                 Key: HBASE-18026
>                 URL: https://issues.apache.org/jira/browse/HBASE-18026
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0, 1.3.2
>            Reporter: Vincent Poon
>            Assignee: Vincent Poon
>            Priority: Minor
>             Fix For: 2.0.0, 1.4.0, 1.2.6, 1.3.2, 1.1.11
>
>         Attachments: HBASE-18026.addendum.patch, HBASE-18026.branch-1.v1.patch, HBASE-18026.master.v1.patch
>
>
> In ProtobufUtil, the protobuf fields are copied into an array using toByteArray().  These
are then passed into the KeyValue constructor which does another copy.
> It seems like we can avoid a copy here by using HBaseZeroCopyByteString#zeroCopyGetBytes()
?



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