[
https://issues.apache.org/jira/browse/STORM-3100?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Roshan Naik updated STORM-3100:
-------------------------------
Summary: Minor optimization: Replace HashMap<Integer, T> with an array
backed data structure for faster lookups (was: Minor optimization: Replace
HashMap<Integer, T> in critical path with an array backed data structure for
faster lookups)
> Minor optimization: Replace HashMap<Integer, T> with an array backed data
> structure for faster lookups
> ------------------------------------------------------------------------------------------------------
>
> Key: STORM-3100
> URL: https://issues.apache.org/jira/browse/STORM-3100
> Project: Apache Storm
> Issue Type: Improvement
> Reporter: Roshan Naik
> Priority: Major
>
> * Introduce _CustomIndexArray_: An array backed data structure to replace
> HashMap<Integer, T> use cases. So it needs to supported -ve indexing. Does
> not need to be dynamically resizable given the nature of use cases we have.
> Upper and lower Index range needs to be specified at construction time.
> * Use this data structure for _GeneralTopologyContext._taskToComponent_
> mapping which is looked up in the critical path _Task.getOutgoingTasks._ This
> lookup happens at least once for every emit and consequently can happen
> millions of times per second.
> * Also use this for _JCQueue.localReceiveQueues_ where the basic idea is
> already in use but not in a reusable manner.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
