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 09:50:00 UTC

[jira] [Created] (HADOOP-15033) Use java.util.zip.CRC32C for Java 9 and above

Dmitry Chuyko created HADOOP-15033:
--------------------------------------

             Summary: 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