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Posted to issues@uniffle.apache.org by GitBox <gi...@apache.org> on 2022/09/28 05:22:29 UTC
[GitHub] [incubator-uniffle] zuston opened a new pull request, #247: [FEATUER] Introduce startup-silent-period mechanism to avoid partial assignments
zuston opened a new pull request, #247:
URL: https://github.com/apache/incubator-uniffle/pull/247
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### What changes were proposed in this pull request?
[FEATUER] Introduce startup-silent-period mechanism to avoid partial assignments
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When changing some coordinator's conf and then restart, coordinator will accept client getAssignment request immediately, but it will serve for jobs request based on the partial registered shuffle-servers, which will make some jobs gotten not enough required shuffle-servers and then slow the running speed.
I think we should make coordinator wait for more than one shuffle-server heartbeat interval before serving for client. During out-of-service, requests from client will fallback to slave coordinator.
### Does this PR introduce _any_ user-facing change?
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Yes
### How was this patch tested?
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UTs
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[GitHub] [incubator-uniffle] jerqi merged pull request #247: Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
jerqi merged PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247
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[GitHub] [incubator-uniffle] jerqi commented on pull request #247: Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
jerqi commented on PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247#issuecomment-1272472403
> > It's ok for Uniffle. I don't have another good ideas.
>
> Got it. I will rename to safemode.
I means that startup-silent-period is ok.
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[GitHub] [incubator-uniffle] zuston commented on pull request #247: [FEATUER] Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
zuston commented on PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247#issuecomment-1260419937
PTAL @jerqi
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[GitHub] [incubator-uniffle] zuston commented on a diff in pull request #247: Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
zuston commented on code in PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247#discussion_r990879736
##########
coordinator/src/main/java/org/apache/uniffle/coordinator/CoordinatorConf.java:
##########
@@ -159,6 +159,18 @@ public class CoordinatorConf extends RssBaseConf {
.enumType(AbstractAssignmentStrategy.HostAssignmentStrategy.class)
.defaultValue(AbstractAssignmentStrategy.HostAssignmentStrategy.PREFER_DIFF)
.withDescription("Strategy for selecting shuffle servers");
+ public static final ConfigOption<Boolean> COORDINATOR_START_SILENT_PERIOD_ENABLED = ConfigOptions
+ .key("rss.coordinator.startup-silent-period.enabled")
+ .booleanType()
+ .defaultValue(false)
+ .withDescription("Enable the startup-silent-period to reject the assignment requests "
Review Comment:
Done
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[GitHub] [incubator-uniffle] jerqi commented on pull request #247: Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
jerqi commented on PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247#issuecomment-1272466918
> > Is `startup-silent-period` a good name? What's name of similar mechanism of Yarn?
>
> No such config in Yarn. `Safe mode` is for HDFS. I think it's not proper in Uniffle scenarios
>
> Do u have any ideas?
It's ok for Uniffle. I don't have another good ideas.
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[GitHub] [incubator-uniffle] zuston commented on pull request #247: Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
zuston commented on PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247#issuecomment-1272713041
Updated.
1. Add the doc of these configs
2. Explain why make the startup-slient-period stop default.
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[GitHub] [incubator-uniffle] zuston commented on pull request #247: Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
zuston commented on PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247#issuecomment-1272469371
> It's ok for Uniffle. I don't have another good ideas.
Got it. I will rename to safemode.
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[GitHub] [incubator-uniffle] jerqi commented on a diff in pull request #247: Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
jerqi commented on code in PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247#discussion_r990784064
##########
coordinator/src/main/java/org/apache/uniffle/coordinator/CoordinatorConf.java:
##########
@@ -159,6 +159,18 @@ public class CoordinatorConf extends RssBaseConf {
.enumType(AbstractAssignmentStrategy.HostAssignmentStrategy.class)
.defaultValue(AbstractAssignmentStrategy.HostAssignmentStrategy.PREFER_DIFF)
.withDescription("Strategy for selecting shuffle servers");
+ public static final ConfigOption<Boolean> COORDINATOR_START_SILENT_PERIOD_ENABLED = ConfigOptions
+ .key("rss.coordinator.startup-silent-period.enabled")
+ .booleanType()
+ .defaultValue(false)
+ .withDescription("Enable the startup-silent-period to reject the assignment requests "
Review Comment:
Should we add more description to explain why we shouldn't use `true` as default value?
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[GitHub] [incubator-uniffle] jerqi commented on pull request #247: Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
jerqi commented on PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247#issuecomment-1261703651
Is `startup-silent-period` a good name? What's name of similar mechanism of Yarn?
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[GitHub] [incubator-uniffle] zuston commented on pull request #247: Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
zuston commented on PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247#issuecomment-1272726825
```
Error: Tests run: 6, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 17.998 s <<< FAILURE! - in org.apache.uniffle.test.CoordinatorGrpcTest
Error: rpcMetricsTest Time elapsed: 1.035 s <<< FAILURE!
org.opentest4j.AssertionFailedError: expected: <0.0> but was: <1.0>
```
CI failed. https://github.com/apache/incubator-uniffle/actions/runs/3216468616/jobs/5258387024 #244
Rerun it.
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[GitHub] [incubator-uniffle] jerqi commented on pull request #247: Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
jerqi commented on PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247#issuecomment-1272727161
Unrelated flaky test failed, I will rerun the flaky test
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[GitHub] [incubator-uniffle] codecov-commenter commented on pull request #247: [FEATUER] Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
codecov-commenter commented on PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247#issuecomment-1260432392
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[GitHub] [incubator-uniffle] zuston commented on pull request #247: Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
zuston commented on PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247#issuecomment-1261722528
> Is `startup-silent-period` a good name? What's name of similar mechanism of Yarn?
No such config in Yarn. `Safe mode` is for HDFS. I think it's not proper in Uniffle scenarios
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[GitHub] [incubator-uniffle] zuston commented on pull request #247: Introduce startup-silent-period mechanism to avoid partial assignments
Posted by GitBox <gi...@apache.org>.
zuston commented on PR #247:
URL: https://github.com/apache/incubator-uniffle/pull/247#issuecomment-1272484002
OK. Do u have any other advice? @jerqi
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