Github user felixcheung commented on the issue:
https://github.com/apache/spark/pull/15790
interesting. jenkins failed because it is building vignettes again right
after it is built correctly, and the second time it didn't have the Spark jar
(so trying to download it as per install.spark)
I'll try to track down where it is doing that.
```
Use Petal_Width instead of Petal.Width as column name
/home/jenkins/workspace/SparkPullRequestBuilder/R
* checking for file
'/home/jenkins/workspace/SparkPullRequestBuilder/R/pkg/DESCRIPTION' ... OK
* preparing 'SparkR':
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
Attaching package: 'SparkR'
The following objects are masked from 'package:stats':
cov, filter, lag, na.omit, predict, sd, var, window
The following objects are masked from 'package:base':
as.data.frame, colnames, colnames<-, drop, intersect, rank,
rbind, sample, subset, summary, transform, union
Spark not found in SPARK_HOME:
Spark not found in the cache directory. Installation will start.
MirrorUrl not provided.
Looking for preferred site from apache website...
Preferred mirror site found: http://mirror.nexcess.net/apache/spark
Downloading spark-2.1.0 for Hadoop 2.7 from:
-
http://mirror.nexcess.net/apache/spark/spark-2.1.0/spark-2.1.0-bin-hadoop2.7.tgz
trying URL
'http://mirror.nexcess.net/apache/spark/spark-2.1.0/spark-2.1.0-bin-hadoop2.7.tgz'
Fetch failed from http://mirror.nexcess.net/apache/spark
To use backup site...
Downloading spark-2.1.0 for Hadoop 2.7 from:
-
http://www-us.apache.org/dist/spark/spark-2.1.0/spark-2.1.0-bin-hadoop2.7.tgz
trying URL
'http://www-us.apache.org/dist/spark/spark-2.1.0/spark-2.1.0-bin-hadoop2.7.tgz'
Fetch failed from http://www-us.apache.org/dist/spark
Quitting from lines 31-32 (sparkr-vignettes.Rmd)
Error: processing vignette 'sparkr-vignettes.Rmd' failed with diagnostics:
Unable to download Spark spark-2.1.0 for Hadoop 2.7. Please check network
connection, Hadoop version, or provide other mirror sites.
Execution halted
```
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