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Job results (from Receive-Job) are grouped by output type, differently than "normal" (BackgroundJob) jobs

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還沒有人認領這個 Issue。

評估

難度
4/5
預估耗時
3-5 天
新手友好度
35/100
Issue 類型
缺陷
描述清晰度
描述清楚
活躍度
停滯
技術堆疊
powershell
領域
backend

研究方向

The issue shows the behavior with Start-ThreadJob and Receive-Job on PowerShell 7.4.5 and ThreadJob 2.1.0. Start by reproducing the example and comparing its output order with Start-Job. Trace how ThreadJob collects and exposes the different output streams; done means Receive-Job preserves the order of interleaved output types.

由索引模型根據 Issue 內容生成。

描述

Consider the following code which starts a ThreadJob:

$job = Start-ThreadJob -ScriptBlock {

    for( $i = 0 ; $i -lt 100 ; $i++ )
    {
        Write-Output "output $i"
        Write-Host "host output $i"
        Write-Information "info output $i"
        Write-Verbose "verbose output $i"
        Write-Warning "warning output $i"

        Start-Sleep -Seconds 5
    }
}

If I receive results of the job, the output is grouped according to the type of output:

PS C:\Users\me> Receive-Job $job
output 0
output 1
output 2
WARNING: warning output 0
WARNING: warning output 1
WARNING: warning output 2
host output 0
host output 1
host output 2
PS C:\Users\me>

This is in contrast to “normal” jobs—if I switch the call out for Start-Job, the results come in a more expected order:

PS C:\Users\me> Receive-Job $job
output 0
host output 0
WARNING: warning output 0
output 1
host output 1
WARNING: warning output 1
output 2
host output 2
WARNING: warning output 2
PS C:\Users\me>
Expected behavior

I expect the output from Receive-Job of a ThreadJob to come in the same order as from a BackgroundJob.

This is because I expect to be able to use thread jobs as a "drop-in" replacement for background jobs (modulo restrictions imposed due to running in the same process, like of course you wouldn't be able to load different versions of .NET assemblies).

Actual behavior

The output from a ThreadJob is all grouped by output type (all Warnings grouped together, all host output grouped together, etc.).

Environment data
Name                           Value
----                           -----
PSVersion                      7.4.5
PSEdition                      Core
GitCommitId                    7.4.5
OS                             Microsoft Windows 10.0.26290
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

PS C:\Users\me> gmo *thread*

ModuleType Version    PreRelease Name                                ExportedCommands
---------- -------    ---------- ----                                ----------------
Binary     2.1.0                 Microsoft.PowerShell.ThreadJob      Start-ThreadJob
Version

7.4.5 / 2.1.0

主要語言
PowerShell
星號
37
分支
22
PR 合併指標
30 天內沒有已合併 PR

環境準備

  • 沒有 Dockerfile 或 Docker Compose 檔案
  • 沒有 Pull Request 範本
  • 閱讀貢獻指南

從這裡開始

  1. 先讀完整個 Issue,再讀專案的貢獻指南。
  2. 在 Issue 下留言說明你要接手 —— 這能避免兩個人做同樣的事。
  3. Fork 儲存庫,在一個分支上完成修改。
  4. 送出 Pull Request,並在描述裡引用這個 Issue 編號。

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