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From "Benoit Chesneau (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (COUCHDB-1461) replication timeout and loop
Date Tue, 10 Apr 2012 13:45:19 GMT
replication timeout and loop
----------------------------

                 Key: COUCHDB-1461
                 URL: https://issues.apache.org/jira/browse/COUCHDB-1461
             Project: CouchDB
          Issue Type: Bug
    Affects Versions: 1.2, 1.3
            Reporter: Benoit Chesneau
         Attachments: test.py

When you try to do at the same time a replication in both way, it will timeout then restart
after 5s. Sometimes it won't be able to recover well. Adding a sleep between 2 reps is possibly
solving it but it shouldn't be needed. 

Attached is a script using couchdbkit to reproduce the problem. SERVER_URI need to be changed
to point to your couchdb node.

Log:

> 09:09:24.016 [info] 127.0.0.1 - - HEAD /testdb1/ 404
09:09:24.028 [info] 127.0.0.1 - - PUT /testdb1/ 201
09:09:24.033 [info] 127.0.0.1 - - HEAD /testdb2/ 404
09:09:24.046 [info] 127.0.0.1 - - PUT /testdb2/ 201
09:09:24.071 [info] 127.0.0.1 - - GET
/_replicator/_all_docs?include_docs=true 200
09:09:28.110 [info] 127.0.0.1 - - PUT /_replicator/rep1 201
09:09:28.119 [info] 127.0.0.1 - - PUT /_replicator/rep2 201
09:09:28.121 [info] Attempting to start replication
`23280770e617f3a82f398b8eca09aaef` (document `rep1`).
09:09:28.123 [info] Attempting to start replication
`e42aaea4a0ceb931930834ecf7b79600` (document `rep2`).
09:09:28.169 [info] 127.0.0.1 - - HEAD /testdb2/ 200
09:09:28.172 [info] 127.0.0.1 - - GET /testdb2/ 200
09:09:28.176 [info] 127.0.0.1 - - GET
/testdb2/_local/e42aaea4a0ceb931930834ecf7b79600 404
09:09:28.179 [info] 127.0.0.1 - - GET
/testdb2/_local/f129a5531f82eb089a3e1ca9e80c9ad2 404
09:09:28.194 [info] Replication `"e42aaea4a0ceb931930834ecf7b79600"` is using:
       4 worker processes
       a worker batch size of 500
       20 HTTP connections
       a connection timeout of 30000 milliseconds
       10 retries per request
       socket options are: [{keepalive,true},{nodelay,false}]
09:09:28.196 [info] 127.0.0.1 - - GET
/testdb2/_changes?feed=normal&style=all_docs&since=0&heartbeat=10000
200
09:09:28.202 [info] Document `rep2` triggered replication
`e42aaea4a0ceb931930834ecf7b79600`
09:09:28.203 [info] starting new replication
`e42aaea4a0ceb931930834ecf7b79600` at <0.262.0>
(`http://localhost:15984/testdb2/` -> `testdb1`)
09:09:28.208 [info] 127.0.0.1 - - HEAD /testdb2/ 200
09:09:28.212 [info] 127.0.0.1 - - GET /testdb2/ 200
09:09:28.218 [info] 127.0.0.1 - - GET
/testdb2/_local/23280770e617f3a82f398b8eca09aaef 404
09:09:28.219 [info] Replication `e42aaea4a0ceb931930834ecf7b79600`
finished (triggered by document `rep2`)
09:09:28.223 [info] 127.0.0.1 - - GET
/testdb2/_local/4b04e1e066f4ad1f988669036080ed9c 404
09:09:28.225 [info] Replication `"23280770e617f3a82f398b8eca09aaef"` is using:
       4 worker processes
       a worker batch size of 500
       20 HTTP connections
       a connection timeout of 30000 milliseconds
       10 retries per request
       socket options are: [{keepalive,true},{nodelay,false}]
09:09:58.203 [error] gen_server <0.287.0> terminated with reason: killed
09:09:58.207 [error] CRASH REPORT Process <0.287.0> with 0 neighbours
crashed with reason:
{killed,[{gen_server,terminate,6,[{file,"gen_server.erl"},{line,737}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,227}]}]}
09:09:58.215 [error] Error in replication
`23280770e617f3a82f398b8eca09aaef` (triggered by document `rep1`):
timeout
Restarting replication in 5 seconds.
09:10:03.223 [info] 127.0.0.1 - - HEAD /testdb2/ 200
09:10:03.227 [info] 127.0.0.1 - - GET /testdb2/ 200
09:10:03.231 [info] 127.0.0.1 - - GET
/testdb2/_local/23280770e617f3a82f398b8eca09aaef 404
09:10:03.235 [info] 127.0.0.1 - - GET
/testdb2/_local/4b04e1e066f4ad1f988669036080ed9c 404
09:10:03.237 [info] Replication `"23280770e617f3a82f398b8eca09aaef"` is using:
       4 worker processes
       a worker batch size of 500
       20 HTTP connections
       a connection timeout of 30000 milliseconds
       10 retries per request
       socket options are: [{keepalive,true},{nodelay,false}]
09:10:03.244 [info] Document `rep1` triggered replication
`23280770e617f3a82f398b8eca09aaef`
09:10:03.245 [info] starting new replication
`23280770e617f3a82f398b8eca09aaef` at <0.335.0> (`testdb1` ->
`http://localhost:15984/testdb2/`)
09:10:03.253 [info] Replication `23280770e617f3a82f398b8eca09aaef`
finished (triggered by document `rep1`)

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