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Posted to dev@couchdb.apache.org by "Clare Walsh (JIRA)" <ji...@apache.org> on 2011/05/16 17:05:50 UTC
[jira] [Commented] (COUCHDB-1163) Document returned by id, but
cannot be found by rev
[ https://issues.apache.org/jira/browse/COUCHDB-1163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13034048#comment-13034048 ]
Clare Walsh commented on COUCHDB-1163:
--------------------------------------
[Same cluster, different dev]
As far as I can tell this is happening due to an invalid document state. All revisions in open_revs can be retrieved by rev *except* the current winner. But interestingly, any revision (apart from 1 and 2) returned from revs=true for the current winner ALSO can't be retrieved by rev.
No matter how far down into the couch code I go to add debug code the value in the btree for those revisions is genuinely empty...
This would imply that the problem is initially caused by incorrect conflict handling or replication, going to try to debug those bits next, any pointers would be much appreciated.
> Document returned by id, but cannot be found by rev
> ---------------------------------------------------
>
> Key: COUCHDB-1163
> URL: https://issues.apache.org/jira/browse/COUCHDB-1163
> Project: CouchDB
> Issue Type: Bug
> Components: Database Core
> Affects Versions: 1.0.1, 1.0.2
> Reporter: James Howe
> Priority: Critical
>
> Somehow, our cluster has developed the following problem on a handful of documents. Will post reproduction steps if we find them. All properties have been redacted. All the documents this affects also have attachments, if that is significant. Once a document is in this situation, it causes conflict detection, replication and include_docs to behave incorrectly or outright fail.
> GET /database/4cdee83a118ea1cf3050b1d006144d46 returns
> {
> "_id": "4cdee83a118ea1cf3050b1d006144d46",
> "_rev": "10-df4bf65a6104ea240f100c30d3cb245d",
> "foo": "bar"
> }
> GET /database/4cdee83a118ea1cf3050b1d006144d46?open_revs=all returns
> [
> {
> "ok": {
> "_id": "4cdee83a118ea1cf3050b1d006144d46",
> "_rev": "10-df4bf65a6104ea240f100c30d3cb245d",
> "foo": "bar"
> }
> },
> {
> "ok": {
> "_id": "4cdee83a118ea1cf3050b1d006144d46",
> "_rev": "8-eea5e36daee12acd79a127abf36f7720",
> _deleted: true
> }
> },
> {
> "ok": {
> "_id": "4cdee83a118ea1cf3050b1d006144d46",
> "_rev": "9-2cead1e4c813a4f0d10a9bc4aa28bfda",
> _deleted: true
> }
> },
> {
> "ok": {
> "_id": "4cdee83a118ea1cf3050b1d006144d46",
> "_rev": "7-c3b44f004660caa496804409089b53d9",
> _deleted: true
> }
> },
> {
> "ok": {
> "_id": "4cdee83a118ea1cf3050b1d006144d46",
> "_rev": "6-52e978041bb324d19e01a2ac5a243702",
> _deleted: true
> }
> },
> {
> "ok": {
> "_id": "4cdee83a118ea1cf3050b1d006144d46",
> "_rev": "5-761bf28c6989f0fde41bdd5732c33159",
> _deleted: true
> }
> },
> {
> "ok": {
> "_id": "4cdee83a118ea1cf3050b1d006144d46",
> "_rev": "4-abb005cf4b2d2dd12880a33af1e7066e",
> _deleted: true
> }
> },
> {
> "ok": {
> "_id": "4cdee83a118ea1cf3050b1d006144d46",
> "_rev": "3-233e4624e620ec1c8b66f21a051832f8",
> _deleted: true
> }
> },
> {
> "ok": {
> "_id": "4cdee83a118ea1cf3050b1d006144d46",
> "_rev": "10-55f0cdf9dd95ed230b733a2c826c842c",
> _deleted: true
> }
> },
> {
> "ok": {
> "_id": "4cdee83a118ea1cf3050b1d006144d46",
> "_rev": "11-264c9d6c249ba2fc9b13df35cb447fd7",
> _deleted: true
> }
> },
> {
> "ok": {
> "_id": "4cdee83a118ea1cf3050b1d006144d46",
> "_rev": "9-2cead1e4c813a4f0d10a9bc4aa28bfda",
> _deleted: true
> }
> },
> {
> "ok": {
> "_id": "4cdee83a118ea1cf3050b1d006144d46",
> "_rev": "2-9f2df19059d9a460a12740a63a4d95e9",
> _deleted: true
> }
> }
> ]
> GET /database/4cdee83a118ea1cf3050b1d006144d46?rev=10-df4bf65a6104ea240f100c30d3cb245d returns
> {
> "error": "not_found",
> "reason": "missing"
> }
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