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https://issues.apache.org/jira/browse/HBASE-5958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270672#comment-13270672
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Gregory Chanan commented on HBASE-5958:
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Did you look at this Jimmy?
http://comments.gmane.org/gmane.comp.lib.protocol-buffers.general/6406
"But yes, if you start with a byte[], and you want a ByteString with the same
content, you are going to need to make a copy, because ByteString has to
guarantee immutability."
> Replace ByteString.copyFrom with new ByteString()
> -------------------------------------------------
>
> Key: HBASE-5958
> URL: https://issues.apache.org/jira/browse/HBASE-5958
> Project: HBase
> Issue Type: Improvement
> Components: performance
> Affects Versions: 0.96.0
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Fix For: 0.96.0
>
>
> ByteString.copyFrom makes a copy of a byte array in case it is changed in
> other thread.
> In most case, we don't need to worry about that. We should avoid copying the
> bytes
> for performance issue.
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