Hello
I use Mongo Reactive with Spring Boot 2 And I have sometimes this stacktrace :
level
Error
thread_name
http-nio-8030-exec-307
logger_name
org.apache.catalina.core.ContainerBase.[Tomcat].[localhost].[/].[dispatcherServlet]
env
STAGING
message
Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.DataAccessResourceFailureException: Timeout waiting for a pooled item after 28486 MILLISECONDS; nested exception is com.mongodb.MongoTimeoutException: Timeout waiting for a pooled item after 28486 MILLISECONDS] with root cause
@timestamp
2018-03-20T10:14:55.581Z
stack_trace
c.m.MongoTimeoutException: Timeout waiting for a pooled item after 28486 MILLISECONDS
at c.m.i.c.ConcurrentPool.get(ConcurrentPool.java:141)
at c.m.c.DefaultConnectionPool.getPooledConnection(DefaultConnectionPool.java:259)
at c.m.c.DefaultConnectionPool.access$200(DefaultConnectionPool.java:60)
at c.m.c.DefaultConnectionPool$1.run(DefaultConnectionPool.java:164)
at j.u.c.Executors$RunnableAdapter.call(Executors.java:514)
at j.u.c.FutureTask.run(FutureTask.java:264)
at j.u.c.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at j.u.c.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:844)
Is it a bug ?
Comment From: wilkinsona
It's hard to say with just a stack trace but it looks like Mongo's pool has no connections available. Please ask a question on Stack Overflow providing a minimal, complete, and verifiable example. If it turns out to be a bug and it's a bug in Spring Boot, we can re-open this issue.
Comment From: mmaryo
Sorry I was not accurate @wilkinsona I think it's a bug
return customerRepository.findAll()
.doOnNext(contact -> {
// block here
Customer customer = customerRepository.findById("toto").block();
//
})
.then(Mono.just("ok"));
The code is blocking when I run mongo request inside mongo request
I join a full test project with that code + a test
spring-boot2-mongo-reactive-app-bug.zip
Comment From: wilkinsona
@mmaryo Thanks. Unfortunately, I think that needs to be investigated by the Spring Data MongoDB team. Please open a JIRA ticket.
Comment From: mmaryo
it's ok, thanks
Comment From: pedroanhezini
alguma resposta?
Comment From: snicoll
My Portuguese is rusty @pedroanhezini but this is an issue with Spring Data MongoDB. Please follow-up there as Andy already indicated.