You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@flink.apache.org by "Ufuk Celebi (JIRA)" <ji...@apache.org> on 2018/08/22 08:04:00 UTC
[jira] [Commented] (FLINK-10193) Default RPC timeout is used when
triggering savepoint via JobMasterGateway
[ https://issues.apache.org/jira/browse/FLINK-10193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16588512#comment-16588512 ]
Ufuk Celebi commented on FLINK-10193:
-------------------------------------
[~gjy] I've changed the type of ticket from {{Improvement}} to {{Bug}} as this results in savepoints that take longer than the default ask timeout to be reported as {{COMPLETED}} with a {{failure-cause}} although the actual savepoint completes successfully:
{code}
{
"status": {
"id": "COMPLETED"
},
"operation": {
"failure-cause": {
"class": "java.util.concurrent.CompletionException",
"stack-trace": "java.util.concurrent.CompletionException: akka.pattern.AskTimeoutException: Ask timed out on [Actor[akka://flink/user/jobmanager_0#42163687]] after [30000 ms]. Sender[null] sent message of type \"org.apache.flink.runtime.rpc.messages.LocalFencedMessage\".\n\tat java.util.concurrent.CompletableFuture.encodeRelay(CompletableFuture.java:326)\n\tat java.util.concurrent.CompletableFuture.completeRelay(CompletableFuture.java:338)\n\tat java.util.concurrent.CompletableFuture.uniRelay(CompletableFuture.java:911)\n\tat java.util.concurrent.CompletableFuture$UniRelay.tryFire(CompletableFuture.java:899)\n\tat java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)\n\tat java.util.concurrent.CompletableFuture.completeExceptionally...<ommitted for brevity>"
}
}
}
{code}
This means that we can't use the REST API to reliably trigger savepoints. I've verified this with a small program that blocks during checkpoints for a configurable amount of time.
The only workaround as far as I know is to increase {{akka.ask.timeout}} (although I would not recommend this as it affects other things as well). Note that increasing {{web.timeout}} does not affect this.
> Default RPC timeout is used when triggering savepoint via JobMasterGateway
> --------------------------------------------------------------------------
>
> Key: FLINK-10193
> URL: https://issues.apache.org/jira/browse/FLINK-10193
> Project: Flink
> Issue Type: Bug
> Components: Distributed Coordination
> Affects Versions: 1.5.3, 1.6.0
> Reporter: Gary Yao
> Assignee: Gary Yao
> Priority: Critical
>
> When calling {{JobMasterGateway#triggerSavepoint(String, boolean, Time)}}, the default timeout is used because the time parameter of the method is not annotated with {{@RpcTimeout}}.
> *Expected behavior*
> * timeout for the RPC should be {{RpcUtils.INF_TIMEOUT}}
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)