Dmitry Chuyko created HADOOP-15033:
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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.
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