Duplicated IDs in _all_docs
---------------------------
Key: COUCHDB-968
URL: https://issues.apache.org/jira/browse/COUCHDB-968
Project: CouchDB
Issue Type: Bug
Components: Database Core
Affects Versions: 1.0.1, 1.0.2
Environment: Ubuntu 10.04.
Reporter: Sebastian Cohnen
We have a database, which is causing serious trouble with compaction and
replication (huge memory and cpu usage, often causing couchdb to crash b/c all
system memory is exhausted). Yesterday we discovered that db/_all_docs is
reporting duplicated IDs (see [1]). Until a few minutes ago we thought that
there are only few duplicates but today I took a closer look and I found 10 IDs
which sum up to a total of 922 duplicates. Some of them have only 1 duplicate,
others have hundreds.
Some facts about the database in question:
* ~13k documents, with 3-5k revs each
* compaction is run on a daily bases
* several thousands updates per hour
* multi-master setup with pull replication from each other
Unfortunately the database's contents are confidential and I'm not allowed to
publish it.
[1]: Part of http://localhost:5984/DBNAME/_all_docs
...
{"id":"9997","key":"9997","value":{"rev":"6096-603c68c1fa90ac3f56cf53771337ac9f"}},
{"id":"9999","key":"9999","value":{"rev":"6097-3c873ccf6875ff3c4e2c6fa264c6a180"}},
{"id":"9999","key":"9999","value":{"rev":"6097-3c873ccf6875ff3c4e2c6fa264c6a180"}},
...
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