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https://issues.apache.org/jira/browse/POOL-393?focusedWorklogId=681171&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-681171
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ASF GitHub Bot logged work on POOL-393:
---------------------------------------
Author: ASF GitHub Bot
Created on: 13/Nov/21 22:35
Start Date: 13/Nov/21 22:35
Worklog Time Spent: 10m
Work Description: coveralls commented on pull request #115:
URL: https://github.com/apache/commons-pool/pull/115#issuecomment-968158061
[](https://coveralls.io/builds/44245186)
Coverage increased (+0.07%) to 85.096% when pulling
**c38281b30ab44ba378aec4637f40ba552cd33781 on psteitz:master** into
**90eab321ad32868dc80c42d7d08ac086d44146a0 on apache:master**.
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Issue Time Tracking
-------------------
Worklog Id: (was: 681171)
Time Spent: 20m (was: 10m)
> BaseGenericObjectPool.jmxRegister may cost too much time
> --------------------------------------------------------
>
> Key: POOL-393
> URL: https://issues.apache.org/jira/browse/POOL-393
> Project: Commons Pool
> Issue Type: Improvement
> Affects Versions: 2.4.2
> Reporter: Shichao Yuan
> Priority: Major
> Time Spent: 20m
> Remaining Estimate: 0h
>
>
> When creating many pools, I find that it tasks too much time to register jmx.
> In the code, the ObjectName's postfix always starts with 1, so many
> InstanceAlreadyExistsExceptions may be thrown before registered successfully.
> Maybe a random number is a better choice, or a atomic long.
> {quote}private ObjectName jmxRegister(BaseObjectPoolConfig config,
> String jmxNameBase, String jmxNamePrefix) {
> ObjectName objectName = null;
> MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
> int i = 1;
> boolean registered = false;
> String base = config.getJmxNameBase();
> if (base == null)
> Unknown macro: \{ base = jmxNameBase; }
> while (!registered) {
> try {
> ObjectName objName;
> // Skip the numeric suffix for the first pool in case there is
> // only one so the names are cleaner.
> if (i == 1)
> Unknown macro: \{ objName = new ObjectName(base + jmxNamePrefix); }
> else
> Unknown macro: \{ objName = new ObjectName(base + jmxNamePrefix + i); }
> mbs.registerMBean(this, objName);
> objectName = objName;
> registered = true;
> } catch (MalformedObjectNameException e) {
> if (BaseObjectPoolConfig.DEFAULT_JMX_NAME_PREFIX.equals(
> jmxNamePrefix) && jmxNameBase.equals(base))
> Unknown macro: \{ // Shouldn't happen. Skip registration if it does.
> registered = true; }
> else
> Unknown macro: \{ // Must be an invalid name. Use the defaults instead.
> jmxNamePrefix = BaseObjectPoolConfig.DEFAULT_JMX_NAME_PREFIX; base =
> jmxNameBase; }
> } catch (InstanceAlreadyExistsException e)
> Unknown macro: \{ // Increment the index and try again i++; }
> catch (MBeanRegistrationException e)
> Unknown macro: \{ // Shouldn't happen. Skip registration if it does.
> registered = true; }
> catch (NotCompliantMBeanException e)
> }
> return objectName;
> }
> {quote}
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