[jira] [Resolved] (SPARK-20958) Roll back parquet-mr 1.8.2 to parquet-1.8.1

["Michael Armbrust (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-20958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Armbrust resolved SPARK-20958.
--------------------------------------
    Resolution: Won't Fix

Thanks everyone.  Sounds like we'll just provide directions in the release notes for users of parquet-avro to pin the version 1.8.1.

> Roll back parquet-mr 1.8.2 to parquet-1.8.1
> -------------------------------------------
>
>                 Key: SPARK-20958
>                 URL: https://issues.apache.org/jira/browse/SPARK-20958
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.2.0
>            Reporter: Cheng Lian
>            Assignee: Cheng Lian
>              Labels: release-notes
>
> We recently realized that parquet-mr 1.8.2 used by Spark 2.2.0-rc2 depends on avro 1.8.1, which is incompatible with avro 1.7.6 used by parquet-mr 1.8.1 and avro 1.7.7 used by spark-core 2.2.0-rc2.
> Basically, Spark 2.2.0-rc2 introduced two incompatible versions of avro (1.7.7 and 1.8.1). Upgrading avro 1.7.7 to 1.8.1 is not preferable due to the reasons mentioned in [PR #17163|https://github.com/apache/spark/pull/17163#issuecomment-286563131]. Therefore, we don't really have many choices here and have to roll back parquet-mr 1.8.2 to 1.8.1 to resolve this dependency conflict.



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