You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-issues@hadoop.apache.org by "Dmitry Chuyko (JIRA)" <ji...@apache.org> on 2017/11/13 09:52:00 UTC
[jira] [Commented] (HADOOP-15033) Use java.util.zip.CRC32C for Java
9 and above
[ https://issues.apache.org/jira/browse/HADOOP-15033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16249316#comment-16249316 ]
Dmitry Chuyko commented on HADOOP-15033:
----------------------------------------
Related issue https://issues.apache.org/jira/browse/HADOOP-10674
> Use java.util.zip.CRC32C for Java 9 and above
> ---------------------------------------------
>
> Key: HADOOP-15033
> URL: https://issues.apache.org/jira/browse/HADOOP-15033
> Project: Hadoop Common
> Issue Type: Improvement
> Components: performance, util
> Reporter: Dmitry Chuyko
>
> java.util.zip.CRC32C implementation is available since Java 9.
> https://docs.oracle.com/javase/9/docs/api/java/util/zip/CRC32C.html
> Platform specific assembler intrinsics make it more aeefective than any pure Java implementation.
> Hadoop is compiled against Java 8 but class constructor may be accessible with method handle on 9 to instances implementing Checksum in runtime.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: common-issues-help@hadoop.apache.org