Problem building SparkCLR code with msbuild VS2015 settings on VSO

[jthelin]

Any clues to why this code won't build with msbuild 2015 on VSO?

I set up an automated build from github master branch on my VSO instance with default settings for the msbuild step, and strangely the build failed with the errors below.

I knew the code built ok for me on my local machine (which has VS2013 installed), so as an experiment I set the VSO build step to use "VS2013" setting instead, and strangely the VSO build succeeded!

I then switched the VSO build step back to the "VS2015" setting and got the original failure again :(

I haven't got VS2015 on any of my machines yet, but I would guess that interactive build might show the same problem?

Any thoughts?

2015-10-31T17:54:51.2733808Z ##[error]csharp\Adapter\Microsoft.Spark.CSharp\Core\RDD.cs(258,109): Error CS0029: Cannot implicitly convert type 'T' to 'System.Collections.Generic.KeyValuePair<T, int>'
2015-10-31T17:54:51.2743806Z      2>Core\RDD.cs(258,109): error CS0029: Cannot implicitly convert type 'T' to 'System.Collections.Generic.KeyValuePair<T, int>' [C:\a\1\s\csharp\Adapter\Microsoft.Spark.CSharp\Adapter.csproj]
2015-10-31T17:54:51.2743806Z ##[error]csharp\Adapter\Microsoft.Spark.CSharp\Core\RDD.cs(258,109): Error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type
2015-10-31T17:54:51.2753809Z      2>Core\RDD.cs(258,109): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [C:\a\1\s\csharp\Adapter\Microsoft.Spark.CSharp\Adapter.csproj]

[xiongrenyi]

looks like explicit type conversion is required here by VS2005 compiler:

Map(x => new KeyValuePair<T, int>(x, 0)).ReduceByKey((x,y)
=> x, numPartitions).Map(x => x.Key)

Date: Sat, 31 Oct 2015 11:07:50 -0700
From: notifications@github.com
To: SparkCLR@noreply.github.com
Subject: [SparkCLR] Problem building SparkCLR code with msbuild VS2015 settings on VSO (#8)

Any clues to why this code won't build with msbuild 2015 on VSO?

I set up an automated build from github master branch on my VSO instance with default settings for the msbuild step, and strangely the build failed with the errors below.

I knew the code built ok for me on my local machine (which has VS2013 installed), so as an experiment I set the VSO build step to use "VS2013" setting instead, and strangely the VSO build succeeded!

I then switched the VSO build step back to the "VS2015" setting and got the original failure again :(

I haven't got VS2015 on any of my machines yet, but I would guess that interactive build might show the same problem?

Any thoughts?

2015-10-31T17:54:51.2733808Z ##[error]csharp\Adapter\Microsoft.Spark.CSharp\Core\RDD.cs(258,109): Error CS0029: Cannot implicitly convert type 'T' to 'System.Collections.Generic.KeyValuePair<T, int>'
2015-10-31T17:54:51.2743806Z 2>Core\RDD.cs(258,109): error CS0029: Cannot implicitly convert type 'T' to 'System.Collections.Generic.KeyValuePair<T, int>' [C:\a\1\s\csharp\Adapter\Microsoft.Spark.CSharp\Adapter.csproj]
2015-10-31T17:54:51.2743806Z ##[error]csharp\Adapter\Microsoft.Spark.CSharp\Core\RDD.cs(258,109): Error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type
2015-10-31T17:54:51.2753809Z 2>Core\RDD.cs(258,109): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [C:\a\1\s\csharp\Adapter\Microsoft.Spark.CSharp\Adapter.csproj]

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[jthelin]

Fixed in PR #20