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https://issues.apache.org/jira/browse/HDDS-2244?focusedWorklogId=324675&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-324675
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ASF GitHub Bot logged work on HDDS-2244:
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Author: ASF GitHub Bot
Created on: 07/Oct/19 22:51
Start Date: 07/Oct/19 22:51
Worklog Time Spent: 10m
Work Description: anuengineer commented on issue #1589: HDDS-2244. Use
new ReadWrite lock in OzoneManager.
URL: https://github.com/apache/hadoop/pull/1589#issuecomment-539237587
> Right now ActiveLock creates ReadWrite Lock with non-fair mode. Do you
mean, we want to create the RWLOCK with an option of fair mode. If my
understanding is wrong, could you let me know what additional things need to be
implemented?
When you use a Reader writer lock, there is a question of fairness. Where as
exclusive locks are first come first serve.
>
> And also this work is mainly to improve read performance workloads, as now
with current approach of exclusive lock all reads are serialized.
I am afraid this gives so much importance to Reads that you will have your
writes getting stalled completely.
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Issue Time Tracking
-------------------
Worklog Id: (was: 324675)
Time Spent: 2h 20m (was: 2h 10m)
> Use new ReadWrite lock in OzoneManager
> --------------------------------------
>
> Key: HDDS-2244
> URL: https://issues.apache.org/jira/browse/HDDS-2244
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Reporter: Bharat Viswanadham
> Assignee: Bharat Viswanadham
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.5.0
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> Use new ReadWriteLock added in HDDS-2223.
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