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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] [Commented] (OAK-5253) Optimize AbstractBlob#equal to not do content equals when possible
Date Mon, 12 Dec 2016 10:20:58 GMT

    [ https://issues.apache.org/jira/browse/OAK-5253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15741548#comment-15741548
] 

Michael Dürig commented on OAK-5253:
------------------------------------

My bad, just corrected my comment. 

> Optimize AbstractBlob#equal to not do content equals when possible
> ------------------------------------------------------------------
>
>                 Key: OAK-5253
>                 URL: https://issues.apache.org/jira/browse/OAK-5253
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: blob
>            Reporter: Amit Jain
>            Assignee: Amit Jain
>         Attachments: OAK-5253.1.patch
>
>
> AbstractBlob#equals tries to match content when length is equal and content identities
is not null and different. Matching content triggers an expensive download of binaries for
S3DataStore.
> Since, right now the content identity is the content hash the check can be short -circuited
when the content identities is not null and not equal to return false.
> This can be revisited if we change the identity to something different.



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