jeff303 commented on issue #25807: [SPARK-25153][SQL] Improve error messages for columns with dots/periods URL: https://github.com/apache/spark/pull/25807#issuecomment-535628888 Looks like the JDK 11 build failed with an issue resolving an artifact. `[ERROR] Failed to execute goal on project spark-tools_2.12: Could not resolve dependencies for project org.apache.spark:spark-tools_2.12:jar:3.0.0-SNAPSHOT: Failed to collect dependencies at org.clapper:classutil_2.12:jar:1.1.2: Failed to read artifact descriptor for org.clapper:classutil_2.12:jar:1.1.2: Could not transfer artifact org.clapper:classutil_2.12:pom:1.1.2 from/to central (https://repo.maven.apache.org/maven2): Connection timed out (Read failed) -> [Help 1]`
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