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Posted to issues@ignite.apache.org by "Stanilovsky Evgeny (JIRA)" <ji...@apache.org> on 2018/08/14 17:51:00 UTC

[jira] [Created] (IGNITE-9272) PureJavaCrc32 vs j.u.zip.CRC32 benchmark and probably replace.

Stanilovsky Evgeny created IGNITE-9272:
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             Summary: PureJavaCrc32 vs j.u.zip.CRC32 benchmark and probably replace.
                 Key: IGNITE-9272
                 URL: https://issues.apache.org/jira/browse/IGNITE-9272
             Project: Ignite
          Issue Type: Improvement
          Components: general
    Affects Versions: 2.6
            Reporter: Stanilovsky Evgeny
         Attachments: BenchmarkCRC.java

I see that Ignite has its own crc32 realization called: PureJavaCrc32 and from desc it seems to be : _The current version is ~10x to 1.8x as fast as Sun's native java.util.zip.CRC32 in Java 1.6_ But my jmh tests show opposite results.
+ If it really so, looks like backward compatibility would be easy, all that need is just to take lower part of long form zip.crc32 realization.



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