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https://issues.apache.org/jira/browse/COUCHDB-1670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13572643#comment-13572643
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Robert Newson commented on COUCHDB-1670:
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That's an interesting one, however I think we should hold fast to the rule that
since is opaque. You have to pass back exactly what you got from couchdb. That
said, we should make this a tidier 400 Bad Request.
> Replicator crashes if numbers in checkpoint docs are expressed in scientific
> notation
> -------------------------------------------------------------------------------------
>
> Key: COUCHDB-1670
> URL: https://issues.apache.org/jira/browse/COUCHDB-1670
> Project: CouchDB
> Issue Type: Bug
> Components: Replication
> Reporter: Jens Alfke
>
> The CouchDB 1.2 replicator process crashes with an Erlang exception when
> parsing a checkpoint document read back from a remote database, if numbers in
> the document were JSON-encoded in scientific notation instead of as integers.
> This includes the properties source_last_seq, end_last_seq, start_last_seq.
> That is, the following encoding works fine:
> ..., "source_last_seq": 1234567, ...
> whereas this completely-equivalent encoding causes an exception:
> ..., "source_last_seq": 1.234567e+06, ...
> This issue raised its head as a result of a CouchDB-compatible engine I'm
> writing (the Couchbase Sync Gateway) which can serve as a passive replication
> endpoint. It's implemented in Go, and the Go JSON package has the side effect
> of (a) parsing all JSON numbers into type 'double', and (b) encoding all
> doubles into JSON using scientific notation if they're more than six digits
> long. The net effect is that when CouchDB stores a checkpoint into the Sync
> Adapter's database and then later reads it back, it barfs due to the
> scientific notation.
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