[
https://issues.apache.org/jira/browse/HBASE-14479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14952159#comment-14952159
]
stack commented on HBASE-14479:
-------------------------------
[~nkeywal] FYI. You'll like this one.
[~ikeda] Should we use this patten elsewhere, say, in the handoff to syncer
threads in WAL? See
http://hbase.apache.org/xref/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#1770
if I understand the pattern right, we could purge Readers and have Handlers
themselves do the select read from the socket (one less handoff)?
> Apply the Leader/Followers pattern to RpcServer's Reader
> --------------------------------------------------------
>
> Key: HBASE-14479
> URL: https://issues.apache.org/jira/browse/HBASE-14479
> Project: HBase
> Issue Type: Improvement
> Components: IPC/RPC, Performance
> Reporter: Hiroshi Ikeda
> Assignee: Hiroshi Ikeda
> Priority: Minor
> Attachments: HBASE-14479-V2 (1).patch, HBASE-14479-V2.patch,
> HBASE-14479-V2.patch, HBASE-14479.patch, gc.png, gets.png, io.png, median.png
>
>
> {{RpcServer}} uses multiple selectors to read data for load distribution, but
> the distribution is just done by round-robin. It is uncertain, especially for
> long run, whether load is equally divided and resources are used without
> being wasted.
> Moreover, multiple selectors may cause excessive context switches which give
> priority to low latency (while we just add the requests to queues), and it is
> possible to reduce throughput of the whole server.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
