hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Elliott Clark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15146) Don't block on Reader threads queueing to a scheduler queue
Date Wed, 27 Jan 2016 14:38:39 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15119321#comment-15119321
] 

Elliott Clark commented on HBASE-15146:
---------------------------------------

Not a single unit test repeats between the sets. :-/ Looks like these are flakey. I'll run
this on a couple of different machines. If everything passes on all the places I can test
I'll commit.

> 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-v7.patch, HBASE-15146-v8.patch, HBASE-15146-v8.patch,
HBASE-15146.0.patch, HBASE-15146.1.patch, HBASE-15146.2.patch, HBASE-15146.3.patch, HBASE-15146.4.patch,
HBASE-15146.5.patch, HBASE-15146.6.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.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message