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https://issues.apache.org/jira/browse/COUCHDB-2979?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15220488#comment-15220488
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ASF GitHub Bot commented on COUCHDB-2979:
-----------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/couchdb-couch-replicator/pull/34
> Replicator manager attempts to checkpoint too frequently
> --------------------------------------------------------
>
> Key: COUCHDB-2979
> URL: https://issues.apache.org/jira/browse/COUCHDB-2979
> Project: CouchDB
> Issue Type: Bug
> Reporter: Nick Vatamaniuc
>
> Current checkpoint interval is set to 5 seconds. That works well for a few
> replications but when there are thousands of them it ends up being an attempt
> every few milliseconds or so.
> Moreover to decide on ownership (in order to keep on replication running per
> cluster) each replication during an attempted checkpoint uses a gen_server
> call to replicator manager. Those usually are fast (I bench-marked at a
> 100-200 usec) however if replicator manager is busy (say stuck fetching large
> filter documents when computing replication ids), none of the replication
> would be able to checkpoint and make progress.
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