Elasticsearch for Apache Hadoop version 8.0.0

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Elasticsearch for Apache Hadoop version 8.0.0

The following list are changes in 8.0.0 as compared to 7.17.0, and combines release notes from the 8.0.0-alpha1, -alpha2, -beta1, -rc1 and -rc2 releases.

Breaking Changes

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Core

Deprecate support for Spark 1.x, Scala 2.10 on Spark 2.x, Hadoop 1, Pig, and Storm #1845
Boost default scroll size to 1000 #1429

Enhancements

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Build

Build ES-Hadoop with Java 17 #1808

Build/Gradle

Setting Java boot classpath so that Scala 2.10 works on Gradle 7.2 #1800
Update Gradle wrapper to 7.3 #1809
Get rid of direct cross-project dependencies to avoid gradle warnings #1868

Spark

Add support for Spark 3.1 and 3.2 #1807

Bug fixes

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Core

Fix support for empty and null arrays #1827

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