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https://issues.apache.org/jira/browse/BEAM-2256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16006625#comment-16006625
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Daniel Halperin commented on BEAM-2256:
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[~hongmin] wow, thanks for finding this issue and the excellent report. Would
you be interested in sending a fix PR?
> mongodb sdk MongoDbIO.BoundedMongoDbSource.splitKeysToFilters incorrect
> -----------------------------------------------------------------------
>
> Key: BEAM-2256
> URL: https://issues.apache.org/jira/browse/BEAM-2256
> Project: Beam
> Issue Type: Bug
> Components: sdk-java-extensions
> Affects Versions: Not applicable, 0.4.0, 0.5.0, 0.6.0
> Reporter: wang hongmin
> Assignee: Davor Bonaci
> Labels: easyfix
> Fix For: 2.0.0
>
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> When use beam-sdks-java-io-mongodb to count a large collection in MongoDB, I
> always get a smaller number than actual size of the collection. It seems a
> puzzle, until I dived into source code and trace the execution. The fault
> exists in method MongoDbIO.BoundedMongoDbSource.splitKeysToFilters(), which
> should return one more FILTER than size of input argument splitKeys.
> I check all version of this file, it seems none was correct.
> Additionally, it seems no suitable [Component]. I choose a similar tag.:)
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