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From "Enda Farrell (JIRA)" <j...@apache.org>
Subject [jira] Created: (COUCHDB-644) Replicator creates URLs which are too long for the source node
Date Tue, 09 Feb 2010 15:57:27 GMT
Replicator creates URLs which are too long for the source node
--------------------------------------------------------------

                 Key: COUCHDB-644
                 URL: https://issues.apache.org/jira/browse/COUCHDB-644
             Project: CouchDB
          Issue Type: Bug
    Affects Versions: 0.9
         Environment: couchdb 0.9.0.r766883 CentOS x86_64 
            Reporter: Enda Farrell
            Priority: Critical


We have an environment which can on ocassion create many open revs of a doc. The URLs that
the replicator creates are longer than the http://issues.apache.org/jira/browse/COUCHDB-243
"mochiweb has an 8k limit", resulting in a general server crash. 

To date the only work-around identified is to "export" the latest revisions of all docs in
the database, destroy the database, re-create the database and reload the exported documents.

On one of our environments we have:
These docs have the trouble:

    * http://db015.back.test.cwwtf.local:5984/labuk_braintestbritain/training_sessions_2255838
    * http://db015.back.test.cwwtf.local:5984/madcache8888/b0019gpg
    * http://db015.back.test.cwwtf.local:5984/madcache/bbc_one_scotland
    * http://db015.back.test.cwwtf.local:5985/labuk_braintestbritain/training_sessions_1910457
    * http://db015.back.test.cwwtf.local:5985/madcache8888/p0031rr3
    * http://db015.back.test.cwwtf.local:5985/madcache/MAD_last_update

Their requests length - path + params (ie no host:port) are shown here (the key) with the
number of times that that length was seen in our log files (the count):

key => count
8544 => 24
8557 => 11
8568 => 2392
8572 => 55
8591 => 893
8594 => 45
8636 => 27

Attached is a file with a sample of these too-long URLs. 

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