geyanggang commented on code in PR #10789:
URL: https://github.com/apache/gravitino/pull/10789#discussion_r3121393585
##########
flink-connector/flink/build.gradle.kts:
##########
@@ -141,9 +141,15 @@ dependencies {
exclude("javax.servlet", "servlet-api")
exclude("org.mortbay.jetty")
}
- testImplementation(libs.hadoop2.mapreduce.client.core) {
+ testImplementation(libs.hadoop3.hdfs.client)
+ testImplementation(libs.hadoop3.mapreduce.client.core) {
exclude("*")
}
+ // Hadoop 3.x runtime requirements (stripped by exclude("*") above)
+ testImplementation(libs.hadoop3.shaded.guava)
+ testImplementation(libs.hadoop3.shaded.protobuf)
+ testImplementation("org.apache.commons:commons-configuration2:2.8.0")
+ testImplementation(libs.re2j)
Review Comment:
Yes, this is expected. Hadoop 2.x bundled everything inside `hadoop-common`.
Hadoop 3.x extracted several internal dependencies into separate artifacts:
- `hadoop-shaded-guava` — Guava relocated to avoid conflicts
- `hadoop-shaded-protobuf` — Protobuf relocated
- `commons-configuration2` — replaced `commons-configuration` 1.x
- `re2j` — new dependency used by `Globber.doGlob()` since 3.3.6
Since we use `exclude("*")` to strip all transitives from `hadoop-common`,
these must be declared explicitly. Without them, you get `NoClassDefFoundError`
at runtime.
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