[jira] [Updated] (ATLAS-2816) Allow ignoring relationship in EntityGraphRetriever for FullTextMapperV2

["Chengbing Liu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ATLAS-2816?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chengbing Liu updated ATLAS-2816:
---------------------------------
    Attachment: ATLAS-2816.01.patch

> Allow ignoring relationship in EntityGraphRetriever for FullTextMapperV2
> ------------------------------------------------------------------------
>
>                 Key: ATLAS-2816
>                 URL: https://issues.apache.org/jira/browse/ATLAS-2816
>             Project: Atlas
>          Issue Type: Bug
>    Affects Versions: 1.0.0
>            Reporter: Chengbing Liu
>            Priority: Major
>         Attachments: ATLAS-2816.01.patch
>
>
> We encountered a problem when using Hive bridge in production. One database has 5000+ tables. Importing the first table costs only tens of milliseconds, and then it becomes slower with more tables. In the end, it costs 1~2 seconds to import one table.
> After investigation, we realized that it is not necessary for the {{FullTextMapperV2}} to retrieve all the relationship of the database each time a table is imported. The time complexity of importing a whole database actually goes to O(n^2) (n is number of tables).
> We propose to add a parameter to the constructor of {{EntityGraphRetriever}}: {{ignoreRelationship}}. When set to true, {{mapVertexToAtlasEntity}} will skip the {{mapRelationshipAttributes}} call. Since {{FullTextMapperV2}} will not use relationship attributes of the entity, this can save plenty of time when importing entities with a large number of relations.



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