Ryan Williams created SPARK-10878:
-------------------------------------
Summary: Race condition when resolving Maven coordinates via Ivy
Key: SPARK-10878
URL: https://issues.apache.org/jira/browse/SPARK-10878
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 1.5.0
Reporter: Ryan Williams
Priority: Minor
I've recently been shell-scripting the creation of many concurrent
Spark-on-YARN apps and observing a fraction of them to fail with what I'm
guessing is a race condition in their Maven-coordinate resolution.
For example, I might spawn an app for each path in file {{paths}} with the
following shell script:
{code}
cat paths | parallel "$SPARK_HOME/bin/spark-submit foo.jar {}"
{code}
When doing this, I observe some fraction of the spawned jobs to fail with
errors like:
{code}
:: retrieving :: org.apache.spark#spark-submit-parent
confs: [default]
Exception in thread "main" java.lang.RuntimeException: problem during retrieve
of org.apache.spark#spark-submit-parent: java.text.ParseException: failed to
parse report:
/hpc/users/willir31/.ivy2/cache/org.apache.spark-spark-submit-parent-default.xml:
Premature end of file.
at
org.apache.ivy.core.retrieve.RetrieveEngine.retrieve(RetrieveEngine.java:249)
at
org.apache.ivy.core.retrieve.RetrieveEngine.retrieve(RetrieveEngine.java:83)
at org.apache.ivy.Ivy.retrieve(Ivy.java:551)
at
org.apache.spark.deploy.SparkSubmitUtils$.resolveMavenCoordinates(SparkSubmit.scala:1006)
at
org.apache.spark.deploy.SparkSubmit$.prepareSubmitEnvironment(SparkSubmit.scala:286)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:153)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:120)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
Caused by: java.text.ParseException: failed to parse report:
/hpc/users/willir31/.ivy2/cache/org.apache.spark-spark-submit-parent-default.xml:
Premature end of file.
at
org.apache.ivy.plugins.report.XmlReportParser.parse(XmlReportParser.java:293)
at
org.apache.ivy.core.retrieve.RetrieveEngine.determineArtifactsToCopy(RetrieveEngine.java:329)
at
org.apache.ivy.core.retrieve.RetrieveEngine.retrieve(RetrieveEngine.java:118)
... 7 more
Caused by: org.xml.sax.SAXParseException; Premature end of file.
at
org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown
Source)
at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
{code}
The more apps I try to launch simultaneously, the greater fraction of them seem
to fail with this or similar errors; a batch of ~10 will usually work fine, a
batch of 15 will see a few failures, and a batch of ~60 will have dozens of
failures.
[This gist shows 11 recent failures I
observed|https://gist.github.com/ryan-williams/648bff70e518de0c7c84].
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