tree 1d0037bb29d07a87bac533447a5a3eb11b27ddc5
parent dc1fddf65d765a8fcb32b85f24c203139cadffcc
author Renan DelValle <rdelval@users.noreply.github.com> 1539046393 -0700
committer GitHub <noreply@github.com> 1539046393 -0700
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Staggered (Variable batch) Updates (#37)

Updates can now be carried out in batch sizes of differing sizes. 

Changes:

* Adding an example of an update schema with a variable batch update.

* UI now displays the update strategy used by the update along with the max amount of parallel instances being updated at once, batch size, or variable batch update sizes.

Compatibility with 0.21.0:

* Converting old schema to new schema upon receiving it for compatibility with clients using the older schema to ease transition from 0.21.0 to 0.22.0.

* Back-fill will port old thrift schema to new update strategies.

*  batch size is set from update strategy in order to ensure backwards compatibility in case of rolling back to version 0.21.0.

Tests added:

* Added tests that use variable update to verify that it works as expected both in rolling_forward and rolling_backwards cases and various corner cases.

* Added a fail fast tests when combining update strategies and wait_for_batch_completion or batch size.

Future TODO:

* Added TODO to add verification to the number of instances running on end to end tests during batch updates.

* Remove deprecated Thrift fields once 0.22.0 is released.