Marcelo Vanzin created SPARK-8302:
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Summary: Support heterogeneous cluster nodes on YARN
Key: SPARK-8302
URL: https://issues.apache.org/jira/browse/SPARK-8302
Project: Spark
Issue Type: New Feature
Components: YARN
Affects Versions: 1.5.0
Reporter: Marcelo Vanzin
Some of our customers install Hadoop on different paths across the cluster.
When running a Spark app, this leads to a few complications because of how we
try to reuse the rest of Hadoop.
Since all configuration for a Spark-on-YARN application is local, the code does
not have enough information about how to run things on the rest of the cluster
in such cases.
To illustrate: let's say that a node's configuration says that
{{SPARK_DIST_CLASSPATH=/disk1/hadoop/lib/*}}. If I launch a Spark app from that
machine, but there's a machine on the cluster where Hadoop is actually
installed in {{/disk2/hadoop/lib}}, then any container launched on that node
will fail.
The problem does not exist (or is much less pronounced) on standalone and mesos
since they require a local Spark installation and configuration.
It would be nice if we could easily support this use case on YARN.
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