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From "Filipe Manana (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COUCHDB-1340) Replication: Invalid JSON reported
Date Wed, 16 Nov 2011 13:55:51 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-1340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13151203#comment-13151203
] 

Filipe Manana commented on COUCHDB-1340:
----------------------------------------

Alex, that 8197 byte length is for what exactly?
I selected the whole HTTP request region in Emacs (starting from GET up to the blank line
after Content-Length: 0) and Emacs tells me that there are 7124 characters in the request
(including the CRLFs separating headers).

You're issue however happened before in the past. Can you try the following patch:

Index: src/couchdb/couch_rep_reader.erl
===================================================================
--- src/couchdb/couch_rep_reader.erl	(revision 1177549)
+++ src/couchdb/couch_rep_reader.erl	(working copy)
@@ -177,7 +177,7 @@
     hd(State#state.opened_seqs).
 
 split_revlist(Rev, {[CurrentAcc|Rest], BaseLength, Length}) ->
-    case Length+size(Rev)+3 > 8192 of
+    case Length+size(Rev)+3 > 8000 of
     false ->
         {[[Rev|CurrentAcc] | Rest], BaseLength, Length+size(Rev)+3};
     true ->

Pasted at http://friendpaste.com/3DVTw8HgpvcUsOECEO1eoI as well.

Thanks for debugging this
                
> Replication: Invalid JSON reported
> ----------------------------------
>
>                 Key: COUCHDB-1340
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-1340
>             Project: CouchDB
>          Issue Type: Bug
>          Components: Replication
>    Affects Versions: 1.1.1
>         Environment: CentOS 5.6 x86_64, Couchdb 1.1.1 (Patched for COUCHDB-1333), spidermonkey
1.8.5, curl 7.21, erlang 14b03
>            Reporter: Alex Markham
>              Labels: invalid, json
>         Attachments: 9c94ed0e23508f4ec3d18f8949c06a5b replicaton from wireshark cut.txt,
replication error wireshark.txt, source couch error.log, target couch error.log
>
>
> It seems our replication has stopped, reporting an error
> [emulator] Error in process <0.21599.306> {{nocatch,{invalid_json,<<0 bytes>>}},[{couch_util,json_decode,1},{couch_rep_reader,'-open_doc_revs/3-lc$^1/1-1-',1},{couch_rep_reader,'-open_doc_revs/3-lc$^1/1-1-',1},{couch_rep_reader,open_doc_revs,3},{couch_rep_reader,'-spawn_document_request/4-fun-0-'...

> It was all working until we upgraded some other couches in our replication "web" from
couch 1.0.3 to couch 1.1.1. We then set of database and view compactions, and sometime overnight
some of the replication links stopped.
> I have curled the command myself, both as a multipart message and a single json response
(with header "Accept:application/json" ) and it can be parsed correctly by Python simplejson
- I have attached it here aswell - called "troublecurl-redacted.txt" - though it is 18.8mb.
The request takes about 6 seconds.
> I don't quite understand why it is reported as invalid JSON? Other reports similar to
this that I googled mentioned blank document ids, but I can't see any of these.

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