Nick Vatamaniuc created COUCHDB-2979:
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Summary: 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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