[jira] [Updated] (GEODE-2129) Need to generate pdx type id random(or avoid sequential)

["Hitesh Khamesra (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GEODE-2129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hitesh Khamesra updated GEODE-2129:
-----------------------------------
    Summary: Need to generate pdx type id random(or avoid sequential)  (was: Need to pdx type id random)

> Need to generate pdx type id random(or avoid sequential)
> --------------------------------------------------------
>
>                 Key: GEODE-2129
>                 URL: https://issues.apache.org/jira/browse/GEODE-2129
>             Project: Geode
>          Issue Type: Bug
>          Components: serialization
>            Reporter: Hitesh Khamesra
>
> Right now pdxtype id has 4 bytes.  Out of those 4 bytes, one byte reserved for distributed-system-id, this make sure type id generated from different cluster has different id. For rest of the three bytes we just increment counter to create new pdxtype id.  In the field, we have observed that sometimes this pdxType Id collides.  One reason could be they end up having same distributed-system-id for the different cluster.  
> Thus to avoid a collision, we will be using hashcode of pdxType for three bytes of pdxType id. That will reduce the possibility of collision.



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