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https://issues.apache.org/jira/browse/COUCHDB-3409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16021709#comment-16021709
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Chris Elder commented on COUCHDB-3409:
--------------------------------------
The issue was encountered on Macs.
The development environment is Vagrant with CouchDB installed in Docker inside
Vagrant.
Moving the CouchDB docker outside of Vagrant resolves the issue.
This JIRA item can be closed.
> CouchDB has intermittent 30sec delays
> -------------------------------------
>
> Key: COUCHDB-3409
> URL: https://issues.apache.org/jira/browse/COUCHDB-3409
> Project: CouchDB
> Issue Type: Bug
> Components: HTTP Interface
> Reporter: Chris Elder
>
> CouchDB has intermittent 30 delays processing requests when CouchDB is
> installed in a docker image. This occurs for PUT, POST and GET operations.
> The following is a shell script used to replicate the error:
> (the database insert_test was created manually)
> Problem usually occurs after 100 to 300 inserts during testing.
> --------------------------
> #!/bin/bash
> for i in {1..500}
> do
> echo "Test insert $i"
> curl -H 'Content-Type: application/json' \
> -X POST http://127.0.0.1:15984/insert_test \
> -d '{"name": "marble"}'
> done
> --------------------------
> The following is an extract of the log showing a 30 second delay on a POST
> operation.
> [notice] 2017-05-03T20:46:29.549696Z nonode@nohost <0.17192.22> de7d93ef52
> 127.0.0.1:15984 10.0.2.2 undefined POST /connecttest 201 ok 4
> [notice] 2017-05-03T20:47:00.397842Z nonode@nohost <0.17198.22> 8d31c7ad19
> 127.0.0.1:15984 10.0.2.2 undefined POST /connecttest 201 ok 30838
> [notice] 2017-05-03T20:47:00.414558Z nonode@nohost <0.17808.22> f75a66f6cb
> 127.0.0.1:15984 10.0.2.2 undefined POST /connecttest 201 ok 3
> [notice] 2017-05-03T20:47:00.437651Z nonode@nohost <0.17809.22> 0c53e2bbcf
> 127.0.0.1:15984 10.0.2.2 undefined POST /connecttest 201 ok 13
> The following is the default.ini used:
> -----------------------------------------------
> ; CouchDB Configuration Settings
> ; Custom settings should be made in this file. They will override settings
> ; in default.ini, but unlike changes made to default.ini, this file won't be
> ; overwritten on server upgrade.
> [chttpd]
> bind_address = 0.0.0.0
> [couchdb]
> ; Specify the location of the database in container.
> ; Optionally, these directories can be mounted in the host via docker.
> database_dir = /opt/couchdb/data/
> view_index_dir = /opt/couchdb/data/
> uri_file = /opt/couchdb/data/couch.uri
> ; only allow the admin user to connect
> ; Uncomment the following statement to enable admin user security.
> ; default_security = admin_only
> ; allow delayed commits since peer manages savepoints and flushing to disk
> delayed_commits = true
> [cluster]
> ; peer maintains a single replica
> n = 1
> ; adjust q to set the level of parallelism locally
> ; recommended to have no more than 10 million documents/shard (q)
> ; for 100 million documents, q=10 -- at a minimum
> q = 8
> [log]
> writer = file
> file = /opt/couchdb/logs/couchdb.log
> level = info
> ; Uncomment the following two statements to enable admin user security.
> ; [httpd]
> ; www-authenticate = Basic realm="administrator"
> [couch_httpd_auth]
> ; Uncomment the following statement to enable admin user security.
> ; require_valid_user = true
> iterations = 1000 ; iterations for password hashing
> ; Uncomment the following two statements to enable admin user security.
> ; [admins]
> ; admin = admin
> [attachments]
> compressible_types = text/*, application/javascript, application/json,
> application/xml, application/octet-stream
> -----------------------------------------------
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