HadoopVsPowershell2.ps1

function Get-ChessResult 
{
    [CmdletBinding()]
    Param(
        [Parameter( 
            Position                        = 0,
            Mandatory                       = $true,
            ValueFromPipeline               = $true,
            ValueFromPipelineByPropertyName = $true
        )]
        [Alias('Path')]
        [String]$Fullname
    )

    begin 
    {
        $results = @{}
    }

    process 
    {
        $file = New-Object System.IO.StreamReader -ArgumentList $Fullname
     
        :loop while ($true ) 
        {
            $line = $file.ReadLine()
            if ($line -eq $null)
            {
                $file.close()
                break loop
            }
            if($line.StartsWith('[Re'))
            {
                $results[$line]+=1
            }
        }
    }
    end 
    {
        Write-Output ($results | Select-Object @{N="White";E={$_.'[Result "1-0"]'}},@{N="Black";E={$_.'[Result "0-1"]'}},@{N="Tie";E={$_.'[Result "1/2-1/2"]'}})
    }
}

Measure-Command {
    get-ChildItem .\ChessData-master  -Filter *.pgn -recurse | Get-ChessResult
}