[Do not merge] Change Reify.asIterable to GBK in BigQueryIO File loads

[Abacn]

test only

Please add a meaningful description for your change here

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[Abacn]

Instruction to patch

To compile, need java11 and git in your bash.

Checkout the project:

git clone https://github.com/apache/beam.git --depth=1

cd beam

git fetch origin pull/33284/head:pr-33284

git switch pr-33284

git log # confirm current branch is on this patch

./gradlew -Ppublishing -p sdks/java/io/google-cloud-platform publishToMavenLocal

# check the jar published into your maven local repo

ls -l ~/.m2/repository/org/apache/beam/beam-sdks-java-io-google-cloud-platform/2.61.0-SNAPSHOT/

# -rw-r--r--  1 ...  2620623 Dec  4 16:31 beam-sdks-java-io-google-cloud-platform-2.61.0-SNAPSHOT.jar

Then in the pom.xml (for maven) or build.gradle (for gradle) project for the pipeline, change the version of org.apache.beam:beam-sdks-java-io-google-cloud-platform from 2.61.0 to 2.61.0-SNAPSHOT

UPDATE:

probably there is one more step need the change take effect, that is to add mavenLocal to the repository of your project.

For maven, it should uses the mavanLocal by default.

For gradle:

# in build.gradle

repositories {
    mavenCentral()
    mavenLocal()
}

[Abacn]

note - there is a single test failing - testWriteEmptyPCollection[0] due to that the table won't get created by switching from ReifyAsIterable to GBK to combine list of files. The former will emit an empty list, while the later does not.

[Abacn]

superceded by #33587, which is based on master branch