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Posted to common-issues@hadoop.apache.org by "Elliott Clark (JIRA)" <ji...@apache.org> on 2016/05/06 18:08:12 UTC
[jira] [Updated] (HADOOP-12975) Add jitter to CachingGetSpaceUsed's
thread
[ https://issues.apache.org/jira/browse/HADOOP-12975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Elliott Clark updated HADOOP-12975:
-----------------------------------
Attachment: HADOOP-12975v3.patch
* Added a default jitter config that's a set time.
> Add jitter to CachingGetSpaceUsed's thread
> ------------------------------------------
>
> Key: HADOOP-12975
> URL: https://issues.apache.org/jira/browse/HADOOP-12975
> Project: Hadoop Common
> Issue Type: Sub-task
> Affects Versions: 2.9.0
> Reporter: Elliott Clark
> Assignee: Elliott Clark
> Attachments: HADOOP-12975v0.patch, HADOOP-12975v1.patch, HADOOP-12975v2.patch, HADOOP-12975v3.patch
>
>
> Running DU across lots of disks is very expensive and running all of the processes at the same time creates a noticeable IO spike. We should add some jitter.
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