Andrew Or created SPARK-3557:
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Summary: Yarn client config prioritization is backwards
Key: SPARK-3557
URL: https://issues.apache.org/jira/browse/SPARK-3557
Project: Spark
Issue Type: Bug
Components: YARN
Affects Versions: 1.1.0
Reporter: Andrew Or
In YarnClientSchedulerBackend, we have:
{code}
if (System.getenv(envVar) != null) {
arrayBuf += (optionName, System.getenv(envVar))
} else if (sc.getConf.contains(sysProp)) {
arrayBuf += (optionName, sc.getConf.get(sysProp))
}
{code}
Elsewhere in Spark we try to honor Spark configs over environment variables.
This was introduced as a fix for the Yarn app name (SPARK-1631), but this also
changed the behavior for other configs. Perhaps we should special case this
particular config and correct the prioritization order of the other configs.
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