steveniemitz opened a new pull request #16229:
URL: https://github.com/apache/beam/pull/16229


   This adds support for caching artifacts across job runs to the python 
dataflow runner.  The method it uses is slightly different than the JVM uses to 
work around some limitations to the python container boot code.  Specifically:
   
   - Certain artifacts must have a specific name (dataflow_python_sdk.tar, 
pipeline.pb, etc)
   - All artifacts for a job must be in the same "directory" on GCS
   
   To work around this, we stage artifacts in a two step process now (gated by 
a pipeline flag, default value TBD?):
   - First upload the artifact to a common cache location (`artifact_cache`) 
directly under the staging directory.  In this location the artifact is named 
using its sha256 hash.  If the file already exists, this step is skipped (which 
is the slowest step)
   - Once uploaded (either because it was a cache hit, or just uploaded), 
perform a GCS copy operation to "copy" the file from its cached location into 
where it should be in the job's unique staging directory.  This operation is 
fast since its a GCS->GCS copy in the same bucket.
   
   Ideally we wouldn't need these workarounds, but this works well for now.  If 
the boot code is ever enhanced to fix the above two issues, it'd be easy to 
change this to use a new caching method.
   
   Just choosing some reviewers based on who's last changed code here:
   
   R: @ihji @tvalentyn 
   
   ------------------------
   
   Thank you for your contribution! Follow this checklist to help us 
incorporate your contribution quickly and easily:
   
    - [ ] [**Choose 
reviewer(s)**](https://beam.apache.org/contribute/#make-your-change) and 
mention them in a comment (`R: @username`).
    - [x] Format the pull request title like `[BEAM-XXX] Fixes bug in 
ApproximateQuantiles`, where you replace `BEAM-XXX` with the appropriate JIRA 
issue, if applicable. This will automatically link the pull request to the 
issue.
    - [ ] Update `CHANGES.md` with noteworthy changes.
    - [x] If this contribution is large, please file an Apache [Individual 
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   See the [Contributor Guide](https://beam.apache.org/contribute) for more 
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   `ValidatesRunner` compliance status (on master branch)
   --------------------------------------------------------
   
   <table>
     <thead>
       <tr>
         <th>Lang</th>
         <th>ULR</th>
         <th>Dataflow</th>
         <th>Flink</th>
         <th>Samza</th>
         <th>Spark</th>
         <th>Twister2</th>
       </tr>
     </thead>
     <tbody>
       <tr>
         <td>Go</td>
         <td>---</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/badge/icon";>
           </a>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Flink/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Flink/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Samza/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Samza/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Spark/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Spark/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>---</td>
       </tr>
       <tr>
         <td>Java</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_ULR/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_ULR/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/badge/icon?subject=V1";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Streaming/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Streaming/lastCompletedBuild/badge/icon?subject=V1+Streaming";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Java11/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Java11/lastCompletedBuild/badge/icon?subject=V1+Java+11";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_VR_Dataflow_V2/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_VR_Dataflow_V2/lastCompletedBuild/badge/icon?subject=V2";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_VR_Dataflow_V2_Streaming/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_VR_Dataflow_V2_Streaming/lastCompletedBuild/badge/icon?subject=V2+Streaming";>
           </a><br>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/badge/icon?subject=Java+8";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink_Java11/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink_Java11/lastCompletedBuild/badge/icon?subject=Java+11";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/badge/icon?subject=Portable";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/badge/icon?subject=Portable+Streaming";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/badge/icon";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Samza/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Samza/lastCompletedBuild/badge/icon?subject=Portable";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/badge/icon";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Spark_Batch/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Spark_Batch/lastCompletedBuild/badge/icon?subject=Portable";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_SparkStructuredStreaming/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_SparkStructuredStreaming/lastCompletedBuild/badge/icon?subject=Structured+Streaming";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Twister2/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Twister2/lastCompletedBuild/badge/icon";>
           </a>
         </td>
       </tr>
       <tr>
         <td>Python</td>
         <td>---</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/badge/icon?subject=V1";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow_V2/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow_V2/lastCompletedBuild/badge/icon?subject=V2";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/badge/icon?subject=ValCont";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Python_PVR_Flink_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Python_PVR_Flink_Cron/lastCompletedBuild/badge/icon?subject=Portable";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Samza/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Samza/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Spark/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Spark/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>---</td>
       </tr>
       <tr>
         <td>XLang</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Direct/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Direct/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Dataflow/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Dataflow/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Flink/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Flink/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Samza/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Samza/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Spark/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Spark/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>---</td>
       </tr>
     </tbody>
   </table>
   
   Examples testing status on various runners
   --------------------------------------------------------
   
   <table>
     <thead>
       <tr>
         <th>Lang</th>
         <th>ULR</th>
         <th>Dataflow</th>
         <th>Flink</th>
         <th>Samza</th>
         <th>Spark</th>
         <th>Twister2</th>
       </tr>
     </thead>
     <tbody>
       <tr>
         <td>Go</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
       </tr>
       <tr>
         <td>Java</td>
         <td>---</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Cron/lastCompletedBuild/badge/icon?subject=V1";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Java11_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Java11_Cron/lastCompletedBuild/badge/icon?subject=V1+Java11";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_Examples_Dataflow_V2/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_Examples_Dataflow_V2/lastCompletedBuild/badge/icon?subject=V2";>
           </a><br>
         </td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
       </tr>
       <tr>
         <td>Python</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
       </tr>
       <tr>
         <td>XLang</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
       </tr>
     </tbody>
   </table>
   
   Post-Commit SDK/Transform Integration Tests Status (on master branch)
   
------------------------------------------------------------------------------------------------
   
   <table>
     <thead>
       <tr>
         <th>Go</th>
         <th>Java</th>
         <th>Python</th>
       </tr>
     </thead>
     <tbody>
       <tr>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Python36/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Python36/lastCompletedBuild/badge/icon?subject=3.6";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Python37/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Python37/lastCompletedBuild/badge/icon?subject=3.7";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Python38/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Python38/lastCompletedBuild/badge/icon?subject=3.8";>
           </a>
         </td>
       </tr>
     </tbody>
   </table>
   
   Pre-Commit Tests Status (on master branch)
   
------------------------------------------------------------------------------------------------
   
   <table>
     <thead>
       <tr>
         <th>---</th>
         <th>Java</th>
         <th>Python</th>
         <th>Go</th>
         <th>Website</th>
         <th>Whitespace</th>
         <th>Typescript</th>
       </tr>
     </thead>
     <tbody>
       <tr>
         <td>Non-portable</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Java_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Java_Cron/lastCompletedBuild/badge/icon";>
           </a><br>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Python_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Python_Cron/lastCompletedBuild/badge/icon?subject=Tests";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_PythonLint_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_PythonLint_Cron/lastCompletedBuild/badge/icon?subject=Lint";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_PythonDocker_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_PythonDocker_Cron/badge/icon?subject=Docker";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_PythonDocs_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_PythonDocs_Cron/badge/icon?subject=Docs";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Go_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Go_Cron/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Website_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Website_Cron/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Whitespace_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Whitespace_Cron/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Typescript_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Typescript_Cron/lastCompletedBuild/badge/icon";>
           </a>
         </td>
       </tr>
       <tr>
         <td>Portable</td>
         <td>---</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Portable_Python_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Portable_Python_Cron/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_GoPortable_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_GoPortable_Cron/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
       </tr>
     </tbody>
   </table>
   
   See 
[.test-infra/jenkins/README](https://github.com/apache/beam/blob/master/.test-infra/jenkins/README.md)
 for trigger phrase, status and link of all Jenkins jobs.
   
   
   GitHub Actions Tests Status (on master branch)
   
------------------------------------------------------------------------------------------------
   [![Build python source distribution and 
wheels](https://github.com/apache/beam/workflows/Build%20python%20source%20distribution%20and%20wheels/badge.svg?branch=master&event=schedule)](https://github.com/apache/beam/actions?query=workflow%3A%22Build+python+source+distribution+and+wheels%22+branch%3Amaster+event%3Aschedule)
   [![Python 
tests](https://github.com/apache/beam/workflows/Python%20tests/badge.svg?branch=master&event=schedule)](https://github.com/apache/beam/actions?query=workflow%3A%22Python+Tests%22+branch%3Amaster+event%3Aschedule)
   [![Java 
tests](https://github.com/apache/beam/workflows/Java%20Tests/badge.svg?branch=master&event=schedule)](https://github.com/apache/beam/actions?query=workflow%3A%22Java+Tests%22+branch%3Amaster+event%3Aschedule)
   
   See [CI.md](https://github.com/apache/beam/blob/master/CI.md) for more 
information about GitHub Actions CI.
   
   


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