GitHub user iilyak opened a pull request:
https://github.com/apache/couchdb-couch-replicator/pull/44
Inject random delays in scan_all_dbs
couch_replication_server scans filesystem to find all _replication
databases. For every database found it does
gen_server:cast(Server, {resume_scan, DbName})
Extract independent process where we do gen_server:cast after a random
delay.
This effectively removes stampede and randomizes the order in which we
process _replication databases.
COUCHDB-3088
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloudant/couchdb-couch-replicator
69914-insert-random-delays
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/couchdb-couch-replicator/pull/44.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #44
----
commit 5715c5e25dba61442834b08d7d7202b185341a87
Author: ILYA Khlopotov <[email protected]>
Date: 2016-07-29T21:32:02Z
Inject random delays in scan_all_dbs
couch_replication_server scans filesystem to find all _replication
databases. For every database found it does
gen_server:cast(Server, {resume_scan, DbName})
Extract independent process where we do gen_server:cast after a random
delay.
This effectively removes stampede and randomizes the order in which we
process _replication databases.
COUCHDB-3088
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