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https://issues.apache.org/jira/browse/KNOX-2408?focusedWorklogId=480383&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-480383
]
ASF GitHub Bot logged work on KNOX-2408:
----------------------------------------
Author: ASF GitHub Bot
Created on: 08/Sep/20 19:19
Start Date: 08/Sep/20 19:19
Worklog Time Spent: 10m
Work Description: smolnar82 commented on a change in pull request #371:
URL: https://github.com/apache/knox/pull/371#discussion_r485142436
##########
File path:
gateway-server/src/main/java/org/apache/knox/gateway/services/security/impl/DefaultAliasService.java
##########
@@ -194,6 +195,24 @@ public void removeAliasesForCluster(String clusterName,
Set<String> aliases) thr
return getPasswordFromAliasForCluster(NO_CLUSTER_NAME, alias);
}
+ //Overriding the default behavior as we want to avoid loading the keystore
N-times from the file system
+ @Override
Review comment:
So, in this case, the cluster we use is `__gateway` and the only reason
this method was added is to avoid exhausting I/O operations in the new
`AliasBasedTokenStateService.loadGatewayCredentialsOnStartup()` method.
Therefore I don't see if other methods should be changes within the scope of
this task.
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Issue Time Tracking
-------------------
Worklog Id: (was: 480383)
Time Spent: 1h (was: 50m)
> Improve AliasBasedTokenState service performance
> ------------------------------------------------
>
> Key: KNOX-2408
> URL: https://issues.apache.org/jira/browse/KNOX-2408
> Project: Apache Knox
> Issue Type: Task
> Components: Server
> Affects Versions: 1.4.0
> Reporter: Sandor Molnar
> Assignee: Sandor Molnar
> Priority: Major
> Fix For: 1.5.0
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> While working on KNOX-2402 there were some performance issues related to
> {{AliasBasedTokenStateService}} which the new tool revealed during the test
> phase:
> {{AliasBasedTokenStateService}}:
> - {{updateExpiration()}} goes directly to alias service rather than updating
> it locally and let the background thread does its job
> - {{getTokens}} goes directly to alias service
> {{DefaultTokenStateService}}:
> - we should start using {{ConcurrentHashMap}} instead of {{HashMap}} for
> {{tokenExpirations}} and {{maxTokenLifetimes}} -> many of the synchronization
> blocks could be get rid of (CHM gives better performance anyway)
> - review {{getTokens()}} usage
> - eviction: needs to consider the case when Gateway was restarted -> nothing
> found in memory -> eviction is extremely slow
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