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https://issues.apache.org/jira/browse/CALCITE-2734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16717763#comment-16717763
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Andrei Sereda commented on CALCITE-2734:
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Thanks for reporting this. We'll fix the documentation.
> MongoDB adapter tutorial is out of date
> ---------------------------------------
>
> Key: CALCITE-2734
> URL: https://issues.apache.org/jira/browse/CALCITE-2734
> Project: Calcite
> Issue Type: Improvement
> Components: avatica, mongodb
> Affects Versions: 1.17.0
> Environment: Host: Mac OS 10.14.1
> Calcite: Master
> Reporter: TommyLike
> Priority: Major
> Labels: document
>
> Hey all,
> I am trying to learn Calcite via MongoDB adapter, and I found there is a
> related tutorial section in
> [HOWTO|[https://calcite.apache.org/docs/howto.html#mongodb-adapter]|https://calcite.apache.org/docs/howto.html#mongodb-adapter],].
> But it seems to be a little out of date now, I found several issues at
> least:
> 1. model file: *mongo-zips-model.json* has been renamed into
> *mongo-models.json.*
> 2. data source file *zips.json* doesn't include all the data required in the
> models.json file.
> 3. the MongoDB adapter can not be directly used, because there is a log
> related bug when execute command ``!connect
> jdbc:calcite:model=mongodb/target/test-classes/mongo-model.json admin
> admin``, related output:
> ```
> SLF4J: Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class
> path, preempting StackOverflowError.
> SLF4J: See also [http://www.slf4j.org/codes.html#log4jDelegationLoop] for
> more details.
> Caused by: java.lang.NoClassDefFoundError: Could not initialize class
> org.apache.log4j.Log4jLoggerFactory
> ```
>
>
>
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