[jira] [Updated] (KNOX-2408) Improve AliasBasedTokenState service performance

["Sandor Molnar (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KNOX-2408?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sandor Molnar updated KNOX-2408:
--------------------------------
    Status: Patch Available  (was: In Progress)

> 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: 20m
>  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



--
This message was sent by Atlassian Jira
(v8.3.4#803005)