# Is there a configuration in esrally to replicate the track data X times or run index-append for a specific period of time? **URL:** \ **Category:** Elasticsearch\ **Tags:** rally\ **Created:** [June 23, 2019, 9:27am UTC](https://discuss.elastic.co/t/is-there-a-configuration-in-esrally-to-replicate-the-track-data-x-times-or-run-index-append-for-a-specific-period-of-time/186999 "2019-06-23T09:27:58Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Ali\_Reza\_Haghighat](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ali_reza_haghighat/32/48590_2.png) [@Ali\_Reza\_Haghighat](https://discuss.elastic.co/u/Ali_Reza_Haghighat)\ **Post date:** [June 23, 2019, 9:27am UTC](https://discuss.elastic.co/t/is-there-a-configuration-in-esrally-to-replicate-the-track-data-x-times-or-run-index-append-for-a-specific-period-of-time/186999/1 "2019-06-23T09:27:58Z")
Hello, I'm a newbie to elastic and esrally. I'm using esrally to benchmark our elastic cluster. Currently, I want to measure the index-append rate of our cluster using our sample data. With the default configuration, the esrally send the track data only one time which last for a few minutes, however, I want to run the test for a few hours to test the stability of our cluster. I cannot create a very large track data for such a test. I need an input parameter for esrally which specifies the numbers of replication of the track data or specifies the time of index-appending. Thank you for your help! ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [June 23, 2019, 9:51am UTC](https://discuss.elastic.co/t/is-there-a-configuration-in-esrally-to-replicate-the-track-data-x-times-or-run-index-append-for-a-specific-period-of-time/186999/2 "2019-06-23T09:51:11Z")
You should be able to use the [laps parameter](https://esrally.readthedocs.io/en/1.2.1/command_line_reference.html#laps) to run the track multiple times in a row. ---
**Author:** ![Ali\_Reza\_Haghighat](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ali_reza_haghighat/32/48590_2.png) [@Ali\_Reza\_Haghighat](https://discuss.elastic.co/u/Ali_Reza_Haghighat)\ **Post date:** [June 23, 2019, 10:02am UTC](https://discuss.elastic.co/t/is-there-a-configuration-in-esrally-to-replicate-the-track-data-x-times-or-run-index-append-for-a-specific-period-of-time/186999/3 "2019-06-23T10:02:34Z")
Thank you! Using laps parameter there is a pause between each test. I know the pause time is quite small, but is there a way to have no pause between tests? ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [June 23, 2019, 10:24am UTC](https://discuss.elastic.co/t/is-there-a-configuration-in-esrally-to-replicate-the-track-data-x-times-or-run-index-append-for-a-specific-period-of-time/186999/4 "2019-06-23T10:24:49Z")
Then you probably need to modify the structure of the track. Am not sure exactly how to best do that if you have a single file you want to repeatedly replay. It would be useful to have a parameter source that is able to generate infinite amounts of data based on sample files and I created [an issue for this](https://github.com/elastic/rally/issues/294) some time back. Please add comments and/or a +1 to this. ---
**Author:** ![Ali\_Reza\_Haghighat](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ali_reza_haghighat/32/48590_2.png) [@Ali\_Reza\_Haghighat](https://discuss.elastic.co/u/Ali_Reza_Haghighat)\ **Post date:** [June 23, 2019, 10:42am UTC](https://discuss.elastic.co/t/is-there-a-configuration-in-esrally-to-replicate-the-track-data-x-times-or-run-index-append-for-a-specific-period-of-time/186999/5 "2019-06-23T10:42:19Z")
I have thumb up the issue. I hope that this feature will be added soon! ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [June 23, 2019, 10:59am UTC](https://discuss.elastic.co/t/is-there-a-configuration-in-esrally-to-replicate-the-track-data-x-times-or-run-index-append-for-a-specific-period-of-time/186999/6 "2019-06-23T10:59:28Z")
Yes, I think it is a feature that would make it a lot easier to work with Rally for a lot of people. ---
**Author:** ![dliappis](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dliappis/32/56174_2.png) [@dliappis](https://discuss.elastic.co/u/dliappis)\ **Post date:** [June 24, 2019, 7:38am UTC](https://discuss.elastic.co/t/is-there-a-configuration-in-esrally-to-replicate-the-track-data-x-times-or-run-index-append-for-a-specific-period-of-time/186999/7 "2019-06-24T07:38:03Z")
One alternative approach is described in [this comment](https://discuss.elastic.co/t/increase-data-size-in-rally-existing-tracks/116514/2) using jinja2 loops. One catch is that to do that it uses multiple indices, but in many cases (depending on the size of the corpus) this could be a realistic scenario. ---
**Author:** ![Ali\_Reza\_Haghighat](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ali_reza_haghighat/32/48590_2.png) [@Ali\_Reza\_Haghighat](https://discuss.elastic.co/u/Ali_Reza_Haghighat)\ **Post date:** [June 24, 2019, 8:04am UTC](https://discuss.elastic.co/t/is-there-a-configuration-in-esrally-to-replicate-the-track-data-x-times-or-run-index-append-for-a-specific-period-of-time/186999/8 "2019-06-24T08:04:20Z")
Yes, it is very similar to what I need. Thank you! ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 22, 2019, 8:04am UTC](https://discuss.elastic.co/t/is-there-a-configuration-in-esrally-to-replicate-the-track-data-x-times-or-run-index-append-for-a-specific-period-of-time/186999/9 "2019-07-22T08:04:20Z")
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