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https://issues.apache.org/jira/browse/ARIA-79?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15849734#comment-15849734
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ASF GitHub Bot commented on ARIA-79:
------------------------------------
Github user dankilman commented on a diff in the pull request:
https://github.com/apache/incubator-ariatosca/pull/64#discussion_r99083124
--- Diff: aria/storage/base_model.py ---
@@ -479,6 +479,7 @@ class NodeInstanceBase(ModelMixin):
__tablename__ = 'node_instances'
_private_fields = ['node_fk', 'host_fk']
+ version_id = Column(Integer, nullable=False)
--- End diff --
think where version_id might also be applied
> Handle attributes update concurrency issues
> -------------------------------------------
>
> Key: ARIA-79
> URL: https://issues.apache.org/jira/browse/ARIA-79
> Project: AriaTosca
> Issue Type: Bug
> Reporter: Ran Ziv
> Assignee: Dan Kilman
>
> Multiple operations may update a node instance's attributes /
> runtime-properties concurrently, overriding one another's changes.
> Some form of versioning lock should be used to prevent this from happening.
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