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https://issues.apache.org/jira/browse/KAFKA-3174?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15124537#comment-15124537
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Jay Kreps commented on KAFKA-3174:
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This is a great find. It looks like it did become an intrinsic in 1.8
https://bugs.openjdk.java.net/browse/JDK-8131048
We can either remove it now since we recommend 1.8, though this will appear as
a perf regression on 1.7, or we can wait a little, or we can try to do
something dynamic where we check the java version and jvm type and make a
decision.
> Re-evaluate the CRC32 class performance.
> ----------------------------------------
>
> Key: KAFKA-3174
> URL: https://issues.apache.org/jira/browse/KAFKA-3174
> Project: Kafka
> Issue Type: Improvement
> Affects Versions: 0.9.0.0
> Reporter: Jiangjie Qin
> Fix For: 0.9.0.1
>
>
> We org.apache.kafka.common.utils.CRC32 because it has better performance than
> java.util.zip.CRC32 in Java 1.6.
> In a recent test I ran it looks in Java 1.8 the CRC32 class is 2x as fast as
> the Crc32 class we are using now. We may want to re-evaluate the performance
> of Crc32 class and see it makes sense to simply use java CRC32 instead.
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