量子哈希为了提高文章的SEO效果，我将重新构建以下内容，保持原有信息的基础上，确保相似度低于30%：
标题：Spark 3.0发布：程序员的代码下载和编译指南
...... exec: curl --silent --show-error -L https://downloads.lightbend.com/zinc/0.3.15/zinc-0.3.15.tgz curl: (77) error setting certificate verify locations: ...... exec: curl --silent --show-error -L https://downloads.lightbend.com/scala/2.12.10/scala-2.12.10.tgz ...... /home/hdfs/Spark3.0/build/mvn: line 130: cd: /home/hdfs/Spark3.0/build/scala-2.12.10/bin/../lib: No such file or directory /home/hdfs/Spark3.0/build/mvn: line 131: cd: /home/hdfs/Spark3.0/build/scala-2.12.10/bin/../lib: No such file or directory exec: curl --silent --show-error -L https://archive.apache.org/dist/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz ...... /home/hdfs/Spark3.0/build/mvn: line 148: /home/hdfs/Spark3.0/build/zinc-0.3.15/bin/zinc: No such file or directory ......
/dev/make-distribution.sh --name spark-3.0 --tgz -Phadoop-2.6 -Phive -Phive-thriftserver -Pyarn -DskipTests
VERSION=$("$MVN" help:evaluate -Dexpression=project.version $@
| grep -v "INFO"
| grep -v "WARNING"
| tail -n 1)
SCALA_VERSION=$("$MVN" help:evaluate -Dexpression=scala.binary.version $@
| grep -v "INFO"
| grep -v "WARNING"
| tail -n 1)
SPARK_HADOOP_VERSION=$("$MVN" help:evaluate -Dexpression=hadoop.version $@
| grep -v "INFO"
| grep -v "WARNING"
| tail -n 1)
SPARK_HIVE=$("$MVN" help:evaluate -Dexpression=project.activeProfiles -pl sql/hive $@
| grep -v "INFO"
| grep -v "WARNING"
| fgrep --count "hive";
# Reset exit status to 0, otherwise the script stops here if the last grep finds nothing
# because we use "set -o pipefail"
echo -n)
[INFO] Compiling 10 Scala sources to /home/hdfs/Spark3.0/mllib-local/target/scala-2.12/test-classes ... Java HotSpot(TM) 64-Bit Server VM warning: CodeCache is full. Compiler has been disabled. Java HotSpot(TM) 64-Bit Server VM warning: Try increasing the code cache size using -XX:ReservedCodeCacheSize= CodeCache: size=245760Kb used=243977Kb max_used=243996Kb free=1782Kb bounds [0x00002aae10000000, 0x00002aae1f000000, 0x00002aae1f000000] total_blobs=59407 nmethods=58763 adapters=539 compilation: disabled (not enough contiguous free space left)
通过以上步骤，您应该能够成功下载和编译Spark的代码。希望这篇文章对您有所帮助！
export MAVEN_OPTS="-Xms12g -Xmx12g -XX:+UseG1GC -XX:ReservedCodeCacheSize=2g"
