Josh Rosen created SPARK-2975:
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Summary: SPARK_LOCAL_DIRS may cause problems when running in local
mode
Key: SPARK-2975
URL: https://issues.apache.org/jira/browse/SPARK-2975
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 1.0.0, 1.1.0
Reporter: Josh Rosen
Priority: Minor
If we're running Spark in local mode and {{SPARK_LOCAL_DIRS}} is set, the
{{Executor}} modifies SparkConf so that this value overrides
{{spark.local.dir}}. Normally, this is safe because the modification takes
place before SparkEnv is created. In local mode, the Executor uses an existing
SparkEnv rather than creating a new one, so it winds up with a DiskBlockManager
that created local directories with the original {{spark.local.dir}} setting,
but other components attempt to use directories specified in the _new_
{{spark.local.dir}}, leading to problems.
I discovered this issue while testing Spark 1.1.0-snapshot1, but I think it
will also affect Spark 1.0 (haven't confirmed this, though).
(I posted some comments at
https://github.com/apache/spark/pull/299#discussion-diff-15975800, but also
opening this JIRA so this isn't forgotten.)
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