# Rally 0.4.4 released

**URL:** <https://discuss.elastic.co/t/rally-0-4-4-released/65194>\
**Category:** Announcements\
**Created:** [November 7, 2016, 9:50am UTC](https://discuss.elastic.co/t/rally-0-4-4-released/65194 "2016-11-07T09:50:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![danielmitterdorfer](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/danielmitterdorfer/32/110510_2.png) [@danielmitterdorfer](https://discuss.elastic.co/u/danielmitterdorfer)\
**Post date:** [November 7, 2016, 9:50am UTC](https://discuss.elastic.co/t/rally-0-4-4-released/65194/1 "2016-11-07T09:50:01Z")

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We've just released Rally 0.4.4. Thanks to your continued reports we could fix several bugs and improve usability in this release.

The highlights include:

- You can now plug in [your own data sources](http://esrally.readthedocs.io/en/0.4.4/adding_tracks.html#custom-parameter-sources) and also [run any operation against your Elasticsearch cluster](http://esrally.readthedocs.io/en/latest/adding_tracks.html#custom-runners). You can see a full example in [https://github.com/elastic/rally-tracks/tree/2/percolator](https://github.com/elastic/rally-tracks/tree/2/percolator) (track.json and [track.py](http://track.py)). This is a very new API so we welcome your feedback (good and bad).
- You don't need to specify `--pipeline=from-distribution` anymore. Rally can autodetect it now.
- Rally detects when the benchmark candidate fails with `OutOfMemoryError` and aborts the benchmark.
- Throughput measurement has improved considerably so you should expect much less variation between min and max reported throughput.
- You can capture GC logs with `--telemetry=gc`.
- We restructured and improved the documentation.

The [changelog](https://github.com/elastic/rally/milestone/17?closed=1) contains the complete list of changes.

All users are recommended to upgrade to this version.

## How to...?

- ... upgrade: `pip3 install --upgrade esrally`
- ... install: `pip3 install esrally`

Note: Depending on your system setup you probably need to prepend these commands with `sudo`.

Please follow the [quickstart](https://esrally.readthedocs.io/en/latest/quickstart.html) for a first time install though.

## Questions and Feedback

If you have questions or feedback, please just post in the [Rally forum](https://discuss.elastic.co/c/rally).

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 9:46pm UTC](https://discuss.elastic.co/t/rally-0-4-4-released/65194/2 "2017-07-05T21:46:54Z")

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