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Posted to issues@hawq.apache.org by "Goden Yao (JIRA)" <ji...@apache.org> on 2015/10/13 00:13:05 UTC
[jira] [Commented] (HAWQ-46) Change data type for Metadata
Versioning versions from int64 to uint64
[ https://issues.apache.org/jira/browse/HAWQ-46?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14953854#comment-14953854 ]
Goden Yao commented on HAWQ-46:
-------------------------------
Please keep "component" at higher level. Metadata versioning is more a feature than a component. :)
> Change data type for Metadata Versioning versions from int64 to uint64
> ----------------------------------------------------------------------
>
> Key: HAWQ-46
> URL: https://issues.apache.org/jira/browse/HAWQ-46
> Project: Apache HAWQ
> Issue Type: Improvement
> Components: Query Execution
> Reporter: George Caragea
> Assignee: George Caragea
>
> Metadata versioning versions are uint64 currently. But at some point during version generation, we use an atomic operation that returns int64 and then cast it to unsigned:
> {code}
> uint64
> mdver_next_global_version()
> {
> return (uint64) gp_atomic_add_64(mdver_global_version_counter, 1);
> }
> {code}
> Change all places that handle versions to use unsigned 64 bit integer values.
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