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https://issues.apache.org/jira/browse/COUCHDB-2535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14266698#comment-14266698
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Alexander Shorin commented on COUCHDB-2535:
-------------------------------------------

For continuous replications you can check /_active_tasks for stats, but indeed 
we should provide more feedback on replication process. Counters are good for 
stats, but they are completely useless when you need to understand their 
origin. Counters couldn't tells you which exact documents failed and the reason 
why. So when you see "docs_failed: 42" the only though you have is "ok, what's 
now?" - not much helpful.

> Crash when replicating doc that exceeds max_document_size
> ---------------------------------------------------------
>
>                 Key: COUCHDB-2535
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-2535
>             Project: CouchDB
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>          Components: Replication
>    Affects Versions: 1.5.1
>            Reporter: Rami Alia
>
> DB SOURCE has a max_document_size of 400MB, DB TARGET has a max_document_size 
> of 40MB. Attempt to replicate a doc greater than 40MB from SOURCE to TARGET.
> Observed result:
> SOURCE replicator crashes followed by SOURCE couchdb crashing
> Expected result:
> SOURCE/TARGET handle this as gracefully as a validation fail and not crash 
> replication or couchdb



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