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https://issues.apache.org/jira/browse/HBASE-15146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Elliott Clark updated HBASE-15146:
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Description:
Blocking on the epoll thread is awful. The new rpc scheduler can have lots of
different queues. Those queues have different capacity limits. Currently the
dispatch method can block trying to add the the blocking queue in any of the
schedulers.
This causes readers to block, tcp acks are delayed, and everything slows down.
> Don't block on Reader threads queueing to a scheduler queue
> -----------------------------------------------------------
>
> Key: HBASE-15146
> URL: https://issues.apache.org/jira/browse/HBASE-15146
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.2.0
> Reporter: Elliott Clark
> Assignee: Elliott Clark
> Priority: Blocker
> Fix For: 1.2.0
>
> Attachments: HBASE-15146.0.patch, HBASE-15146.1.patch,
> HBASE-15146.2.patch
>
>
> Blocking on the epoll thread is awful. The new rpc scheduler can have lots of
> different queues. Those queues have different capacity limits. Currently the
> dispatch method can block trying to add the the blocking queue in any of the
> schedulers.
> This causes readers to block, tcp acks are delayed, and everything slows down.
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