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https://issues.apache.org/jira/browse/ATLAS-1207?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15581881#comment-15581881
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Shwetha G S commented on ATLAS-1207:
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The attached patch replaces DSL query with direct graph query
> Dataset exists query in lineage APIs takes longer
> -------------------------------------------------
>
> Key: ATLAS-1207
> URL: https://issues.apache.org/jira/browse/ATLAS-1207
> Project: Atlas
> Issue Type: Bug
> Reporter: Sharmadha Sainath
> Assignee: Shwetha G S
> Fix For: 0.8-incubating
>
> Attachments: ATLAS-1207.patch
>
>
> Hive_column now extends DataSet. Lineage Service uses the DSL query Dataset
> where __guid = <id> which maps to the gremlin query g.V().has(supertype,
> Dataset).has(__guid, <id>). Since the first filter is on type which returns
> many vertices, this query is slow. Supertypes is a list property and not sure
> how adding combined index will work. This can be replaced with graph query
> directly like
> {code}
> titanGraph.query().has(Constants.GUID_PROPERTY_KEY, guid)
> .has(Constants.SUPER_TYPES_PROPERTY_KEY,
> AtlasClient.DATA_SET_SUPER_TYPE)
> {code}
> Thanks [~ssainath] for helping to test this
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