Minor Description
You can see the below error ouput in every spark arm jenkins job [1]:
/build/zinc-0.3.15/bin/nailgun: line 50: /root/dev/spark/build/zinc-0.3.15/bin/ng/linux32/ng: cannot execute binary file: Exec format error
And you can also reproduce this error output using the simple cmd: `build/mvn -v` on aarch64:
root@yikun-arm:~/dev/spark# uname -a
Linux yikun-arm 4.15.0-70-generic #79-Ubuntu SMP Tue Nov 12 10:36:10 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux
root@yikun-arm:~/dev/spark# uname -m
aarch64
root@yikun-arm:~/dev/spark# build/mvn -v
/root/dev/spark/build/zinc-0.3.15/bin/nailgun: line 50: /root/dev/spark/build/zinc-0.3.15/bin/ng/linux32/ng: cannot execute binary file: Exec format error
/root/dev/spark/build/zinc-0.3.15/bin/nailgun: line 50: /root/dev/spark/build/zinc-0.3.15/bin/ng/linux32/ng: cannot execute binary file: Exec format error
Using `mvn` from path: /root/dev/spark/build/apache-maven-3.6.3/bin/mvn
Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: /root/dev/spark/build/apache-maven-3.6.3
Java version: 1.8.0_222, vendor: Private Build, runtime: /usr/lib/jvm/java-8-openjdk-arm64/jre
Default locale: en, platform encoding: UTF-8
OS name: "linux", version: "4.15.0-70-generic", arch: "aarch64", family: "unix"
/root/dev/spark/build/zinc-0.3.15/bin/nailgun: line 50: /root/dev/spark/build/zinc-0.3.15/bin/ng/linux32/ng: cannot execute binary file: Exec format error
The reason of this error output is that the zinc is not supported well on aarch64, unfortunately, the stand alone zinc is deprecated now[2], so that we have no chance to support it on aarch64 in stand alone verison.
Looks like we should skip the zinc related command on aarch64 platform first, and then upgrade the sbt/zinc[3] in future.
[1] https://amplab.cs.berkeley.edu/jenkins/job/spark-master-test-maven-arm/547/consoleFull
[2] https://github.com/typesafehub/zinc
[3] https://github.com/sbt/zinc
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