couchdb-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ning Tan (JIRA)" <>
Subject [jira] Updated: (COUCHDB-516) Replication: _replicate does not finish replication in one pass and has to be invoked repeatedly
Date Thu, 01 Oct 2009 16:39:23 GMT


Ning Tan updated COUCHDB-516:

    Attachment: replication.txt

Replication records and corresponding server logs.

> Replication: _replicate does not finish replication in one pass and has to be invoked
> ------------------------------------------------------------------------------------------------
>                 Key: COUCHDB-516
>                 URL:
>             Project: CouchDB
>          Issue Type: Bug
>          Components: Database Core
>    Affects Versions: 0.10
>         Environment: Mac OS X 10.5 w/ CouchDB 0.10.x multiple revisions (latest is 820436)
> Ubuntu Desktop 9.04 w/ CouchDB 0.10.x multiple revisions (latest is 818247)
>            Reporter: Ning Tan
>         Attachments: replication.txt
> When we replicate between a remote database and a local one (pulling from remote into
local), we are observing partial replications, meaning that we have to issue repeated _replicate
calls for the replication to complete. For a database with 17,000 documents, for example,
it could take up to 7 calls for the entire database to replicate into an empty one. Each time,
the number of documents replicated over seemed random.
> The use case is very simple--replicating a database into an empty one with no concurrent
writes, no additional load or i/o, etc. The databases involved are a mixture of the 10.0.x
code base natively built on Ubuntu and Mac.
> It seems to me that every (not all) partial replication process is associated with a
corresponding entry in the log that says "recording a checkpoint at source update_seq .....".
(i.e. you can match the recorded_seq number in the replication response with the checkpoint
update_seq numbers in the log).
> Futon vs. curl doesn't make a difference.

This message is automatically generated by JIRA.
You can reply to this email to add a comment to the issue online.

View raw message