GitHub user cph6 opened a pull request:
https://github.com/apache/beam/pull/3507
[BEAM-2556] Add client-side throttling.
The approach used is as described in
https://landing.google.com/sre/book/chapters/handling-overload.html#client-side-throttling-a7sYUg
. By backing off individual workers in response to high error rates, we
relieve
pressure on the Datastore service, increasing the chance that the workload
can
complete successfully.
The exported cumulativeThrottledSeconds could also be used as an autoscaling
signal in future.
R: @vikkyrk
R: @ssisk
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cph6/beam datastore_adaptive
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/beam/pull/3507.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3507
commit 152fa5c8b8b37e3ecf1b28bacd4d636936a3ea04
Author: Colin Phipps
Date: 2017-06-26T13:34:19Z
Add client-side throttling.
The approach used is as described in
https://landing.google.com/sre/book/chapters/handling-overload.html#client-side-throttling-a7sYUg
. By backing off individual workers in response to high error rates, we
relieve
pressure on the Datastore service, increasing the chance that the workload
can
complete successfully.
The exported cumulativeThrottledSeconds could also be used as an autoscaling
signal in future.
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