Github user asfgit closed the pull request at:
https://github.com/apache/spark/pull/16830
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GitHub user dongjinleekr opened a pull request:
https://github.com/apache/spark/pull/16830
[MINOR][CORE] Fix incorrect documentation of WritableConverter
## What changes were proposed in this pull request?
`WritableConverter` and `WritableFactory` work in opposite
