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Posted to issues@spark.apache.org by "Kent Yao (Jira)" <ji...@apache.org> on 2026/02/07 16:40:00 UTC

[jira] [Resolved] (SPARK-55401) Add retry logic and timeout handling to pyspark install download

     [ https://issues.apache.org/jira/browse/SPARK-55401?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kent Yao resolved SPARK-55401.
------------------------------
    Fix Version/s: 4.2.0
       Resolution: Fixed

Issue resolved by pull request 54183
[https://github.com/apache/spark/pull/54183]

> Add retry logic and timeout handling to pyspark install download
> ----------------------------------------------------------------
>
>                 Key: SPARK-55401
>                 URL: https://issues.apache.org/jira/browse/SPARK-55401
>             Project: Spark
>          Issue Type: Improvement
>          Components: PySpark
>    Affects Versions: 4.2.0
>            Reporter: Kent Yao
>            Assignee: Kent Yao
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.2.0
>
>
> The test_install_spark test in pyspark.tests.test_install_spark is flaky in CI due to network issues when downloading Spark distributions from Apache mirrors.
> Current issues in pyspark/install.py:
> 1. No connection/read timeout on urllib.request.urlopen() - downloads can hang indefinitely
> 2. No retry logic on download failures - a single transient network error causes complete failure
> 3. Mirror failover only happens on exception, not on timeout/stall
> Proposed fix:
> - Add configurable timeout to urlopen() calls (both for mirror resolution and download)
> - Add retry logic with exponential backoff for download attempts
> - Improve error reporting for debugging CI failures
> This affects the pyspark-install CI job which downloads ~400MB from Apache mirrors and frequently fails due to network instability.



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