Yanbo Liang created SPARK-18444:
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Summary: SparkR running in yarn-cluster mode should not download
Spark package
Key: SPARK-18444
URL: https://issues.apache.org/jira/browse/SPARK-18444
Project: Spark
Issue Type: Bug
Components: SparkR
Reporter: Yanbo Liang
When running SparkR job in yarn-cluster mode, it will download Spark package
from apache website which is not necessary.
{code}
./bin/spark-submit --master yarn-cluster ./examples/src/main/r/dataframe.R
{code}
The following is output:
{code}
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, endsWith, intersect,
rank, rbind, sample, startsWith, 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...
......
{code}
There's no {{SPARK_HOME}} in yarn-cluster mode since the R process is in a
remote host of the yarn cluster rather than in the client host. The JVM comes
up first and the R process then connects to it. So in such cases we should
never have to download Spark as Spark is already running.
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