rangareddy opened a new pull request, #14187:
URL: https://github.com/apache/hudi/pull/14187
### Describe the issue this Pull Request addresses
This PR standardizes the local development experience and prevents
accidental connection to unintended clusters when using interactive Spark
shells.
Currently, if the spark-shell, pyspark, or spark-sql scripts are executed
without explicitly setting the --master flag, Spark may default to a
potentially undefined or shared configuration. For common development
workflows, it is safer and more efficient to guarantee a local, isolated
environment.
<!-- Either describe the issue inline here with motivation behind the
changes
(or) link to an issue by including `Closes #<issue-number>` for
context.
If this PR includes changes to the storage format, public APIs,
or has breaking changes, use `!` (e.g., feat!: ...) -->
### Summary and Changelog
**Summary:**
Configures the default behavior of interactive Spark shell scripts
(spark-shell, pyspark, spark-sql) to use a dedicated local master with two
threads (local[2]).
**Changelog:**
* Modified shell scripts (spark-shell, pyspark, spark-sql) to include the
--master local[2] configuration by default.
* Users can still override this setting by explicitly passing a different
--master flag.
<!-- Short, plain-English summary of what users gain or what changed in
behavior.
Followed by a detailed log of all the changes. Highlight if any code
was copied. -->
### Impact
The impact is minor and primarily affects the development experience:
* User-facing Change: The default behavior of running spark-shell (and
related interactive tools) without arguments will now always launch a 2-thread
local instance, guaranteeing resource isolation for local testing.
* Performance Impact: None on actual cluster workloads. Local performance
for interactive tasks may be marginally improved due to predictable resource
allocation.
<!-- Describe any public API or user-facing feature change or any
performance impact. -->
### Risk Level
low
This change only affects non-cluster, interactive shell execution. It does
not impact production configurations, cluster deployments, or submitted
application jobs. The risk is limited to local developer environments.
<!-- Accepted values: none, low, medium or high. Other than `none`, explain
the risk.
If medium or high, explain what verification was done to mitigate the
risks. -->
### Documentation Update
none
<!-- Describe any necessary documentation update if there is any new
feature, config, or user-facing change. If not, put "none".
- The config description must be updated if new configs are added or the
default value of the configs are changed.
- Any new feature or user-facing change requires updating the Hudi website.
Please follow the
[instruction](https://hudi.apache.org/contribute/developer-setup#website)
to make changes to the website. -->
### Contributor's checklist
- [x] Read through [contributor's
guide](https://hudi.apache.org/contribute/how-to-contribute)
- [x] Enough context is provided in the sections above
- [x] Adequate tests were added if applicable
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