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https://issues.apache.org/jira/browse/SPARK-24576?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun updated SPARK-24576:
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Description:
This issue aims to upgrade Apache ORC library from 1.4.4 to 1.5.1 in order to
bring the following benefits into Apache Spark.
* ORC-91 Support for variable length blocks in HDFS (The current space wasted
in ORC to padding is known to be 5%.)
* ORC-344 Support for using Decimal64ColumnVector
In addition to that, Apache Hive 3.1.0 will use ORC 1.5.1 (HIVE-19669). This
will improve the compatibility between Apache Spark and Apache Hive.
was:
This issue aims to upgrade Apache ORC library from 1.4.4 to 1.5.1 in order to
bring the following benefits into Apache Spark.
* ORC-91 Support for variable length blocks in HDFS (The current space wasted
in ORC to padding is known to be 5%.)
* ORC-234 Support for older versions of Hadoop (>= 2.2.x)
* ORC-344 Support for using Decimal64ColumnVector
In addition to that, Apache Hive 3.1.0 will use ORC 1.5.1 (HIVE-19669). This
will improve the compatibility between Apache Spark and Apache Hive.
> Upgrade Apache ORC to 1.5.2
> ----------------------------
>
> Key: SPARK-24576
> URL: https://issues.apache.org/jira/browse/SPARK-24576
> Project: Spark
> Issue Type: Improvement
> Components: Build
> Affects Versions: 2.4.0
> Reporter: Dongjoon Hyun
> Priority: Major
>
> This issue aims to upgrade Apache ORC library from 1.4.4 to 1.5.1 in order to
> bring the following benefits into Apache Spark.
> * ORC-91 Support for variable length blocks in HDFS (The current space
> wasted in ORC to padding is known to be 5%.)
> * ORC-344 Support for using Decimal64ColumnVector
> In addition to that, Apache Hive 3.1.0 will use ORC 1.5.1 (HIVE-19669). This
> will improve the compatibility between Apache Spark and Apache Hive.
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