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Support of GC and S3 storages for registry in Java Feature Server #2043

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merged 2 commits into from
Nov 18, 2021

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pyalex
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@pyalex pyalex commented Nov 16, 2021

Signed-off-by: pyalex moskalenko.alexey@gmail.com

What this PR does / why we need it:

Previously only local file could be used as registry in Java Feature Server. This PR adds support for both Google Storage and AWS S3 as possible sources for registry file. Feature Server can only read registry file and not update it. It also may periodically check (when this enabled) if registry file was updated and load new version into memory.

Which issue(s) this PR fixes:

Fixes #

Does this PR introduce a user-facing change?:

New application property `feast.registry-refresh-interval` when set to value bigger than `0` will enable periodical check whether registry file was updated

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codecov-commenter commented Nov 16, 2021

Codecov Report

Merging #2043 (32a4051) into master (7032559) will increase coverage by 25.76%.
The diff coverage is n/a.

Impacted file tree graph

@@             Coverage Diff             @@
##           master    #2043       +/-   ##
===========================================
+ Coverage   57.54%   83.31%   +25.76%     
===========================================
  Files         100      100               
  Lines        8028     8080       +52     
===========================================
+ Hits         4620     6732     +2112     
+ Misses       3408     1348     -2060     
Flag Coverage Δ
integrationtests 73.74% <ø> (?)
unittests 58.24% <ø> (+0.69%) ⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files Coverage Δ
sdk/python/feast/repo_operations.py 42.58% <0.00%> (-1.37%) ⬇️
sdk/python/feast/online_response.py 87.71% <0.00%> (+1.75%) ⬆️
sdk/python/feast/infra/online_stores/sqlite.py 96.77% <0.00%> (+2.15%) ⬆️
sdk/python/feast/feature.py 72.72% <0.00%> (+3.03%) ⬆️
sdk/python/feast/infra/provider.py 91.73% <0.00%> (+4.95%) ⬆️
sdk/python/feast/errors.py 70.00% <0.00%> (+5.00%) ⬆️
sdk/python/feast/data_source.py 61.29% <0.00%> (+6.45%) ⬆️
sdk/python/feast/infra/offline_stores/file.py 96.80% <0.00%> (+8.00%) ⬆️
sdk/python/feast/feature_view.py 88.05% <0.00%> (+10.69%) ⬆️
sdk/python/feast/infra/passthrough_provider.py 100.00% <0.00%> (+11.11%) ⬆️
... and 50 more

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@pyalex pyalex added the kind/feature New feature or request label Nov 16, 2021
@pyalex pyalex changed the title Support of GCS and s3 storages for registry in Java Feature Server Support of GC and S3 storages for registry in Java Feature Server Nov 16, 2021
@pyalex pyalex force-pushed the java-cloud-registry branch 2 times, most recently from dd96ee2 to 85b166b Compare November 17, 2021 03:17
Signed-off-by: pyalex <moskalenko.alexey@gmail.com>
this.registry = new Registry(this.registryFile.getContent());

if (refreshIntervalSecs > 0) {
setupPeriodicalRefresh(refreshIntervalSecs);
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In the AWS Lambda Feature server, every feast apply is responsible for tearing down existong lambdas and recreating them with the new registry file. Should we follow the same pattern in feast-serving? Just seems weird that the behavior for the two servings options is different in this respect.

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Although, I agree on consistency point, this is a little different case. Java Feature Server will be deployed in Kubernetes (see my proposal for deploying architecture in #2017 ) with Helm chart (at least for now). I also would argue that restarting pod on each registry change might be not be desired in production environment (not sure whether it's good thing for lambda as well, since it also doesn't start instantly).
But the main problem that currently feast sdk isn't capable of managing complex infrastructure, even aws lambda is currently deployed not completely (still requires manually configuration), and for this case we would need to manage kubernetes object. Probably that will be solved with introduction of pulumi.
But I still think that this current simple solution deserves to exist. It could be short-term solution until feast apply is capable of managing complex infra or long-term for people who will manage infra manually.

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Okay, yeah I think that's fair. For more "productionized" services, the ability to run without restarts is valuable.

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Is it worth making a TODO comment here with our reasoning? I just want to make sure that we capture our decision.

Signed-off-by: pyalex <moskalenko.alexey@gmail.com>
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achals commented Nov 18, 2021

/lgtm

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: achals, pyalex

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5 participants