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From "Xiang Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14882) Provide a Put API that adds the provided family, qualifier, value without copying
Date Sat, 03 Sep 2016 15:36:21 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15461258#comment-15461258

Xiang Li commented on HBASE-14882:

[~enis], thanks for the comments!

[~anoop.hbase] and [~enis]: The new implementation is extracted out of Put and I put it into
CellUtil as a public static inner class of CellUtil, and name it as "InputsImmutableCell".
Does it make sense to you? 

The reason why putting it into CellUtil is that I found there are some Cell implementations
inside CellUtil, such as EmptyCell... But it will be placed into a different package (not
hbase.client as Put, but hbase) and a different jar (not hbase-client.jar, but hbase-common.jar).
Do you think it is reasonable to put it there, or it is better to be placed in hbase.client,
to be together with Put?

> Provide a Put API that adds the provided family, qualifier, value without copying
> ---------------------------------------------------------------------------------
>                 Key: HBASE-14882
>                 URL: https://issues.apache.org/jira/browse/HBASE-14882
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 1.2.0
>            Reporter: Jerry He
>            Assignee: Xiang Li
>             Fix For: 2.0.0
>         Attachments: HBASE-14882.master.000.patch, HBASE-14882.master.001.patch
> In the Put API, we have addImmutable()
> {code}
>  /**
>    * See {@link #addColumn(byte[], byte[], byte[])}. This version expects
>    * that the underlying arrays won't change. It's intended
>    * for usage internal HBase to and for advanced client applications.
>    */
>   public Put addImmutable(byte [] family, byte [] qualifier, byte [] value)
> {code}
> But in the implementation, the family, qualifier and value are still being copied locally
to create kv.
> Hopefully we should provide an API that truly uses immutable family, qualifier and value.

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