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https://issues.apache.org/jira/browse/PARQUET-192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ryan Blue resolved PARQUET-192.
-------------------------------
Resolution: Fixed
Fix Version/s: parquet-mr_1.6.0
Issue resolved by pull request 127
[https://github.com/apache/incubator-parquet-mr/pull/127]
> Avro maps drop null values
> --------------------------
>
> Key: PARQUET-192
> URL: https://issues.apache.org/jira/browse/PARQUET-192
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-mr, quet-mr
> Reporter: Ryan Blue
> Fix For: parquet-mr_1.6.0
>
>
> The Avro serialization code for maps writes all keys and then all values
> without calling start and end to detect and handle null values. This causes
> the code to drop null values.
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