I connect my sample project to a hosted CI service, it only takes 3 seconds to run there...while the same tests takes 2minutes on my macbook pro. so maybe this is a mac os specific problem?
On Tue, Sep 16, 2014 at 3:06 PM, 诺铁 <noty...@gmail.com> wrote: > hi, > > I am trying to write some unit test, following spark programming guide > <http://spark.apache.org/docs/latest/programming-guide.html#unit-testing> > . > but I observed unit test runs very slow(the code is just a SparkPi), so I > turn log level to trace and look through the log output. and found > creation of SparkContext seems to take most time. > > there are some action take a lot of time: > 1, seems starting jetty > 14:04:55.038 [ScalaTest-run-running-MySparkPiSpec] DEBUG > o.e.jetty.servlet.ServletHandler - > servletNameMap={org.apache.spark.ui.JettyUtils$$anon$1-672f11c2=org.apache.spark.ui.JettyUtils$$anon$1-672f11c2} > 14:05:25.121 [ScalaTest-run-running-MySparkPiSpec] DEBUG > o.e.jetty.util.component.Container - Container > org.eclipse.jetty.server.Server@e3cee7b + > SelectChannelConnector@0.0.0.0:4040 as connector > > 2, I don't know what's this > 14:05:25.202 [ScalaTest-run-running-MySparkPiSpec] DEBUG > org.apache.hadoop.security.Groups - Group mapping > impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; > cacheTimeout=300000 > 14:05:54.594 [spark-akka.actor.default-dispatcher-4] TRACE > o.a.s.s.BlockManagerMasterActor - Checking for hosts with no recent heart > beats in BlockManagerMaster. > > > are there any way to make this faster for unit test? > I also notice in spark's unit test, that there exists a SharedSparkContext > <https://github.com/apache/spark/blob/master/core/src/test/scala/org/apache/spark/SharedSparkContext.scala>, > is this the suggested way to work around this problem? if so, I would > suggest to document this in programming guide. >
