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Posted to issues@geode.apache.org by "Hitesh Khamesra (JIRA)" <ji...@apache.org> on 2016/11/18 00:32:58 UTC

[jira] [Created] (GEODE-2129) Need to pdx type id random

Hitesh Khamesra created GEODE-2129:
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             Summary: Need to pdx type id random
                 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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