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[SPARK-22574] [Mesos] [Submit] Check submission request parameters #19793

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[SPARK-22574] [Mesos] [Submit] Check submission request parameters #19793

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44fd5d3
Check submission request parameters
Gschiavon Nov 21, 2017
14d6417
change test env var name
Gschiavon Nov 27, 2017
57d52c4
added clearer exception message
Gschiavon Nov 28, 2017
ba221bd
change test variables names
Gschiavon Nov 28, 2017
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2 changes: 2 additions & 0 deletions core/src/main/scala/org/apache/spark/deploy/rest/SubmitRestProtocolRequest.scala
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Expand Up @@ -46,6 +46,8 @@ private[rest] class CreateSubmissionRequest extends SubmitRestProtocolRequest {
super.doValidate()
assert(sparkProperties != null, "No Spark properties set!")
assertFieldIsSet(appResource, "appResource")
assertFieldIsSet(appArgs, "appArgs")
assertFieldIsSet(environmentVariables, "environmentVariables")

@susanxhuynh susanxhuynh Nov 27, 2017

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What if there are no args or environment variables for a particular job? Is the caller expected to pass in an empty array?

@Gschiavon Gschiavon Nov 28, 2017

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Actually If the caller wouldn't set "appArgs" or "environmentVariables" was causing a null pointer and leaving the Dispatcher inactive. So now I think the caller should pass an empty array, I could add a test for that case @susanxhuynh .

assertPropertyIsSet("spark.app.name")
assertPropertyIsBoolean("spark.driver.supervise")
assertPropertyIsNumeric("spark.driver.cores")
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2 changes: 2 additions & 0 deletions core/src/test/scala/org/apache/spark/deploy/rest/SubmitRestProtocolSuite.scala
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Expand Up @@ -86,6 +86,8 @@ class SubmitRestProtocolSuite extends SparkFunSuite {
message.clientSparkVersion = "1.2.3"
message.appResource = "honey-walnut-cherry.jar"
message.mainClass = "org.apache.spark.examples.SparkPie"
message.appArgs = Array("hdfs://tmp/auth")
message.environmentVariables = Map("SPARK_HOME" -> "/test")

@susanxhuynh susanxhuynh Nov 27, 2017

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There should be a check at the end of this test to make sure these fields show up in the newMessage object. (around L.125)

@felixcheung felixcheung Nov 28, 2017

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and probably don't want to set SPARK_HOME either? :)

@Gschiavon Gschiavon Nov 28, 2017

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@felixcheung okay done :)

@Gschiavon Gschiavon Nov 28, 2017

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@susanxhuynh I've checked what you said but those variables are overwritten below, so I can't actually check it, right?

@susanxhuynh susanxhuynh Nov 28, 2017

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@Gschiavon You're right, I didn't see those variables were already set below. But, I do have a question now about whether these fields are optional or not. In the original test, (L.93), there's a comment about "optional fields", and the app args and env vars are tested there (L.105-106). Since this test was added with Standalone mode in mind, I wonder if these fields are considered optional there? There's no documentation as you said so we can't know for sure. I just want to make sure the extra validation doesn't break any existing applications (in Standalone cluster mode).

@susanxhuynh susanxhuynh Nov 29, 2017

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OK, I was looking at RestSubmissionClient (used by Mesos and Standalone) - the client does always set 'appArgs' and 'envrionmentVariables': https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/deploy/rest/RestSubmissionClient.scala#L427 So, it's only a bug when the user does not use the RestSubmissionClient (by using 'curl' directly to the server, for example). So, that addresses my concern about Standalone mode. As to whether to add a similar check in the Standalone class, I don't have a strong opinion about it (fix it here or fix in another PR).

@Gschiavon Gschiavon Nov 29, 2017

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Perfect then @susanxhuynh . Fix it maybe in another PR?

@susanxhuynh susanxhuynh Nov 29, 2017

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Yeah, that's fine with me.

@Gschiavon Gschiavon Nov 30, 2017 •
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Cool, I can do it when I have some time.

Let me know if I have to something else here! @felixcheung

Thanks @susanxhuynh

@susanxhuynh susanxhuynh Nov 30, 2017

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LGTM

val conf = new SparkConf(false)
conf.set("spark.app.name", "SparkPie")
message.sparkProperties = conf.getAll.toMap
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8 changes: 6 additions & 2 deletions ...ce-managers/mesos/src/main/scala/org/apache/spark/deploy/rest/mesos/MesosRestServer.scala
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Expand Up @@ -82,6 +82,12 @@ private[mesos] class MesosSubmitRequestServlet(
val mainClass = Option(request.mainClass).getOrElse {
throw new SubmitRestMissingFieldException("Main class is missing.")
}
val appArgs = Option(request.appArgs).getOrElse {
throw new SubmitRestMissingFieldException("Application arguments are missing.")

@ArtRand ArtRand Nov 27, 2017

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Nit: maybe put the fields here also? Something like Application arguments ("appArgs") are missing. Similar below.

@Gschiavon Gschiavon Nov 28, 2017

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Done @ArtRand

}
val environmentVariables = Option(request.environmentVariables).getOrElse {
throw new SubmitRestMissingFieldException("Environment variables are missing.")
}

// Optional fields
val sparkProperties = request.sparkProperties
Expand All @@ -91,8 +97,6 @@ private[mesos] class MesosSubmitRequestServlet(
val superviseDriver = sparkProperties.get("spark.driver.supervise")
val driverMemory = sparkProperties.get("spark.driver.memory")
val driverCores = sparkProperties.get("spark.driver.cores")
val appArgs = request.appArgs
val environmentVariables = request.environmentVariables
val name = request.sparkProperties.getOrElse("spark.app.name", mainClass)

// Construct driver description
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