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https://issues.apache.org/jira/browse/COUCHDB-1874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13745155#comment-13745155
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Joan Touzet commented on COUCHDB-1874:
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The related BigCouch change: https://github.com/cloudant/fabric/pull/40
Again from IRC:
bq. <+kocolosk> the fix in Apache CouchDB master would look different I guess,
but I'll bet the root cause of the process mailbox filling up with 'db_updated'
messages is the same
> Continuous replication slows down over time
> -------------------------------------------
>
> Key: COUCHDB-1874
> URL: https://issues.apache.org/jira/browse/COUCHDB-1874
> Project: CouchDB
> Issue Type: Bug
> Components: Replication
> Reporter: Joan Touzet
>
> As reported on the mailing list:
> bq. > Did you specify "continuous": true in the replication spec? If you
> did, do you see the same slowdown if you omit that flag?
> bq. > This sounds rather similar to a bug we encountered in early builds of
> BigCouch, but I don't remember the history of the codebase well enough to say
> whether the bug might be latent in Apache CouchDB.
> bq. Yes, I was using "continuous": true.
> bq. You're right: When disabling "continuous", replication seems more stable
> and efficient (1200 doc/sec). Thank you !
> And, from IRC:
> bq. 12:54 <+rnewson> iirc the cause we found was an unconsumed event message
> that gradually fills the mailbox, which sounds like it ought to affect
> couchdb.
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