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https://issues.apache.org/jira/browse/HBASE-17877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15980656#comment-15980656
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Vikas Vishwakarma commented on HBASE-17877:
-------------------------------------------
[~Apache9] , I am copying the code below:
{code}
public class MyBenchmark {
static byte[] ba1_8;
static byte[] ba2_8;
...
static {
Random r = new Random();
ba1_8 = new byte[8];
ba2_8 = new byte[8];
r.nextBytes(ba1_8);
r.nextBytes(ba2_8);
....
}
@GenerateMicroBenchmark
@Fork(1)
@BenchmarkMode(Mode.Throughput)
@Warmup(iterations = 20, time = 1, timeUnit = TimeUnit.SECONDS)
@Measurement(iterations = 50, time = 1, timeUnit = TimeUnit.SECONDS)
public void testHBaseComparator8(BlackHole b) {
// place your benchmarked code here
b.consume(ByteArrayComparator.compareToHbase(ba1_8, 0, ba1_8.length,
ba2_8, 0, ba2_8.length));
}
...
//Similarly for HBase/Hadoop/Guava101 for byte array size from 4 to 16K
int compareToHbase(byte[] buffer1, int offset1, int length1,
byte[] buffer2, int offset2, int length2) {
final int minLength = Math.min(length1, length2);
// Changing input random index using random byte before running
compare
int indx = r.nextInt(minLength);
int cindx = r.nextInt(byteArrLen);
buffer1[indx] = byteArr[cindx];
buffer2[indx] = byteArr[cindx];
....
//Remaining HBase comparator code
}
}
{code}
> Replace/improve HBase's byte[] comparator
> -----------------------------------------
>
> Key: HBASE-17877
> URL: https://issues.apache.org/jira/browse/HBASE-17877
> Project: HBase
> Issue Type: Bug
> Reporter: Lars Hofhansl
> Assignee: Vikas Vishwakarma
> Attachments: 17877-1.2.patch, 17877-v2-1.3.patch, 17877-v3-1.3.patch,
> 17877-v4-1.3.patch, ByteComparatorJiraHBASE-17877.pdf,
> HBASE-17877.branch-1.3.001.patch, HBASE-17877.branch-1.3.002.patch,
> HBASE-17877.master.001.patch, HBASE-17877.master.002.patch
>
>
> [~vik.karma] did some extensive tests and found that Hadoop's version is
> faster - dramatically faster in some cases.
> Patch forthcoming.
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