Gengliang Wang created SPARK-26076:
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Summary: Revise ambiguous error message from load-spark-env.sh
Key: SPARK-26076
URL: https://issues.apache.org/jira/browse/SPARK-26076
Project: Spark
Issue Type: Improvement
Components: Build
Affects Versions: 3.0.0
Reporter: Gengliang Wang
When I try to run scripts (e.g. `./sbin/start-history-server.sh -h` in latest
master, I got such error:
```
Presence of build for multiple Scala versions detected.
Either clean one of them or, export SPARK_SCALA_VERSION in spark-env.sh.
```
The error message is quite confusing and there is no `spark-env.sh` in our code
base.
As now with https://github.com/apache/spark/pull/22967, we can revise the error
message as following:
```
Presence of build for both scala versions(SCALA 2.11 and SCALA 2.12) detected.
Either clean one of them or, export SPARK_SCALA_VERSION=2.12 in
load-spark-env.sh.
```
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