0004252: connectionpool overflow

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Category

Severity

Reproducibility

Date Submitted

Last Update

0004252

[Resin]

minor

always

10-08-10 12:17

11-16-10 10:29

Reporter

ferg

View Status

public

Assigned To

ferg

Priority

normal

Resolution

fixed

Status

closed

Product Version

4.0.10

Summary

0004252: connectionpool overflow

Description

(rep by Wesley Wu)

I experienced ConnectionPool pool overflow issue again in resin 4.0.10.
>
> Some time (probably 20 minutes) after resin started, resin reported:
>
> [10-10-08 01:07:28.555] {server://*:6801-5523} [^]
> ConnectionPool[jdbc/mypool] pool overflow
> [10-10-08 01:07:28.555] {server://*:6801-5109} [^]
> ConnectionPool[jdbc/mypool] pool overflow
> [10-10-08 01:07:28.557] {server://*:6801-5435} [^]
> ConnectionPool[jdbc/mypool] pool overflow
> [10-10-08 01:07:28.557] {server://*:6801-5494} [^]
> ConnectionPool[jdbc/mypool] pool overflow
> [10-10-08 01:07:28.568] {server://*:6801-5520} [^]
> ConnectionPool[jdbc/mypool] pool overflow
> [10-10-08 01:07:28.568] {server://*:6801-5542} [^]
> ConnectionPool[jdbc/mypool] pool overflow
> [10-10-08 01:07:28.576] {server://*:6801-5633} [^]
> ConnectionPool[jdbc/mypool] pool overflow
>
> but my pool was not full at all which size was 2000.
>
> I met this before in resin 4.0.9 which caused by the alarm issue.
>
> Then I switched back to Resin 4.0.9.s100809 and everything went fine.
>

Additional Information

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Notes
(0004847) ferg 11-16-10 10:29	The "overflow" is somewhat misleading. Resin's pool throttles the number of new connections being created at any one time. If the 30s timeout occurs before that throttle, Resin will create a new connection anyway. 4.0.14 increases the throttle to 20 from the old 5.

Issue History
Date Modified	Username	Field	Change
10-08-10 12:17	ferg	New Issue
11-16-10 10:29	ferg	Note Added: 0004847
11-16-10 10:29	ferg	Assigned To	=> ferg
11-16-10 10:29	ferg	Status	new => closed
11-16-10 10:29	ferg	Resolution	open => fixed
11-16-10 10:29	ferg	Fixed in Version	=> 4.0.14

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