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https://issues.apache.org/jira/browse/HBASE-4012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13056969#comment-13056969
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stack commented on HBASE-4012:
------------------------------
Interesting. It looks like we've now picked up the below on build:
{code}
[INFO] --- maven-compiler-plugin:2.0.2:compile (default-compile) @ hbase ---
[INFO] Compiling 527 source files to
/home/hudson/hudson-slave/workspace/HBase-TRUNK/trunk/target/classes
[WARNING]
/home/hudson/hudson-slave/workspace/HBase-TRUNK/trunk/src/main/java/org/apache/hadoop/hbase/util/Bytes.java:[44,15]
sun.misc.Unsafe is Sun proprietary API and may be removed in a future release
[WARNING]
/home/hudson/hudson-slave/workspace/HBase-TRUNK/trunk/src/main/java/org/apache/hadoop/hbase/util/Bytes.java:[1037,19]
sun.misc.Unsafe is Sun proprietary API and may be removed in a future release
[WARNING]
/home/hudson/hudson-slave/workspace/HBase-TRUNK/trunk/src/main/java/org/apache/hadoop/hbase/util/Bytes.java:[1043,21]
sun.misc.Unsafe is Sun proprietary API and may be removed in a future release
[WARNING]
/home/hudson/hudson-slave/workspace/HBase-TRUNK/trunk/src/main/java/org/apache/hadoop/hbase/util/Bytes.java:[1048,28]
sun.misc.Unsafe is Sun proprietary API and may be removed in a future release
{code}
> Further optimize byte comparison methods
> ----------------------------------------
>
> Key: HBASE-4012
> URL: https://issues.apache.org/jira/browse/HBASE-4012
> Project: HBase
> Issue Type: Improvement
> Components: util
> Affects Versions: 0.92.0
> Reporter: Todd Lipcon
> Assignee: Ted Yu
> Priority: Minor
> Labels: noob
> Fix For: 0.92.0
>
> Attachments: 4012-v2.txt, 4012.txt
>
>
> Guava uses some clever tricks with sun.misc.Unsafe to compare byte arrays
> about 100% faster than the naive byte-by-byte implementation:
> http://guava-libraries.googlecode.com/svn/trunk/guava/src/com/google/common/primitives/UnsignedBytes.java
> We should borrow this [Apache 2 licensed] code.
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