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https://issues.apache.org/jira/browse/ATLAS-3863?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sarath Subramanian updated ATLAS-3863:
--------------------------------------
Description:
Tag propagation is re-evaluated every time when a relationship (edge) is
deleted.
Removal of propagated classifications is controlled at the assignment time to
an entity:
!image-2020-06-24-12-51-38-941.png|width=716,height=272!
* {color:#172b4d}Remove propagation on entity delete - *TRUE :* {color}
** _Propagated classifications (to all downstream entities) will be removed
when the source entity where the classification is originally assigned is
deleted._
* Remove propagation on entity delete - *FALSE :*
** _Propagated classifications (to all downstream entities) will *not* be
removed when the source entity where the classification is originally
assigned is deleted._
There is no need to revaluate tag propagation during relationship (edge)
deletion since removal of tag propagation depends on the above config
*Significant performance improvement observed: 83% performance improvement
seen.*
Deleting a hive_table entity (with 44 columns and 16 propagated classifications)
{{Before patch : 279 secs (4 mins, 39 secs) }}
{{After patch : 46.92 secs}}
was:
Tag propagation is re-evaluated every time when a relationship (edge) is
deleted.
Removal of propagated classifications is controlled at the assignment time to
an entity:
!image-2020-06-24-12-51-38-941.png|width=716,height=272!
* {color:#172b4d}Remove propagation on entity delete - *TRUE :* {color}
** _Propagated classifications (to all downstream entities) will be removed
when the source entity where the classification is originally assigned is
deleted._
* Remove propagation on entity delete - *FALSE :*
** _Propagated classifications (to all downstream entities) will *not* be
removed when the source entity where the classification is originally
assigned is deleted._
There is no need to revaluate tag propagation during relationship (edge)
deletion since removal of tag propagation depends on the above config.
> Avoid re-evaluating tag propagation when deleting relationship (edge)
> ---------------------------------------------------------------------
>
> Key: ATLAS-3863
> URL: https://issues.apache.org/jira/browse/ATLAS-3863
> Project: Atlas
> Issue Type: Improvement
> Components: atlas-core
> Affects Versions: 2.0.0
> Reporter: Sarath Subramanian
> Assignee: Sarath Subramanian
> Priority: Major
> Labels: classification, tagpropagation
> Fix For: 2.1.0
>
> Attachments: ATLAS-3863.001.patch, image-2020-06-24-12-51-38-941.png
>
>
> Tag propagation is re-evaluated every time when a relationship (edge) is
> deleted.
> Removal of propagated classifications is controlled at the assignment time to
> an entity:
> !image-2020-06-24-12-51-38-941.png|width=716,height=272!
>
> * {color:#172b4d}Remove propagation on entity delete - *TRUE :* {color}
> ** _Propagated classifications (to all downstream entities) will be removed
> when the source entity where the classification is originally assigned is
> deleted._
>
> * Remove propagation on entity delete - *FALSE :*
> ** _Propagated classifications (to all downstream entities) will *not* be
> removed when the source entity where the classification is
> originally assigned is deleted._
>
> There is no need to revaluate tag propagation during relationship (edge)
> deletion since removal of tag propagation depends on the above config
>
> *Significant performance improvement observed: 83% performance improvement
> seen.*
> Deleting a hive_table entity (with 44 columns and 16 propagated
> classifications)
> {{Before patch : 279 secs (4 mins, 39 secs) }}
> {{After patch : 46.92 secs}}
>
>
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