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https://issues.apache.org/jira/browse/HBASE-14922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Elliott Clark updated HBASE-14922:
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Description:
Starting all regionservers at the same time will mean that most
PeriodicMemstoreFlusher's will be running at the same time. So all of these
threads will queue flushes at about the same time.
This was supposed to be mitigated by Delayed. However that isn't nearly enough.
This results in the immediate filling up and then draining of the flush queues
every hour.
was:
Starting all regionservers at the same time will mean that most
PeriodicMemstoreFlusher's will be running at the same time. So all of these
threads will queue flushes at about the same time.
This was supposed to be mitigated by Delayed. However that isn't used at all.
This results in the immediate filling up and then draining of the flush queues
every hour.
> Delayed flush doesn't work causing flush storms.
> ------------------------------------------------
>
> Key: HBASE-14922
> URL: https://issues.apache.org/jira/browse/HBASE-14922
> Project: HBase
> Issue Type: Bug
> Reporter: Elliott Clark
> Assignee: Elliott Clark
>
> Starting all regionservers at the same time will mean that most
> PeriodicMemstoreFlusher's will be running at the same time. So all of these
> threads will queue flushes at about the same time.
> This was supposed to be mitigated by Delayed. However that isn't nearly
> enough. This results in the immediate filling up and then draining of the
> flush queues every hour.
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