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Posted to issues@ignite.apache.org by "Vladimir Ozerov (JIRA)" <ji...@apache.org> on 2015/10/28 11:16:27 UTC
[jira] [Issue Comment Deleted] (IGNITE-1770) Portables: implement
constant-time field lookup.
[ https://issues.apache.org/jira/browse/IGNITE-1770?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vladimir Ozerov updated IGNITE-1770:
------------------------------------
Comment: was deleted
(was: Lets use FNV1 hashing algo as it demonstrates both good distribution and speed:
{code}
static final int FNV1_OFFSET_BASIS = 0x811C9DC5;
static final int FNV1_PRIME = 0x01000193;
int hash = FNV1_OFFSET_BASIS;
for (byte inputByte : input) {
hash = hash ^ inputByte;
hash = hash * FNV1_PRIME;
}
{code}
"input" is a sequence of field IDs.)
> Portables: implement constant-time field lookup.
> ------------------------------------------------
>
> Key: IGNITE-1770
> URL: https://issues.apache.org/jira/browse/IGNITE-1770
> Project: Ignite
> Issue Type: Task
> Components: general, interop
> Affects Versions: ignite-1.4
> Reporter: Vladimir Ozerov
> Assignee: Vladimir Ozerov
> Priority: Blocker
> Fix For: 1.5
>
>
> See https://cwiki.apache.org/confluence/display/IGNITE/Portable+object+constant-time+field+lookup
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