[jira] [Created] (SPARK-10878) Race condition when resolving Maven coordinates via Ivy

["Ryan Williams (JIRA)" <ji...@apache.org>]

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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