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https://issues.apache.org/jira/browse/HBASE-17932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15971011#comment-15971011
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Allan Yang edited comment on HBASE-17932 at 4/17/17 12:24 PM:
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Have you take gc into count? Those troughs in Figure1 may result of GCs. Big
updates(100k) will increase gc burden obviously. In my opinion, even if
client 1 and client 2 fights over CPU and IO resources, the total throughput
should be stable.
The reason why figure 2 is so smooth may because you use only 3 handler for
big updates, reliefs the gc problem.
I think more tests are needed.
1. test big updates only(test client1 in your case)
2. use 150 handlers for client1 and 3 handler for client2
3.use HBase2.0 which have off-heap write path
was (Author: allan163):
Have you take gc into count? Those troughs in Figure1 may result of GCs. Big
updates(100k) will increase gc burden obviously. In my opinion, even if
client 1 and client 2 fights over CPU and IO resources, the total throughput
should be stable.
The reason why figure 2 is so smooth may because you use only 3 handler for
big updates, reliefs the gc problem.
I think more tests are needed.
1. test big updates only(test client1 in your case)
2. use 150 handlers for client1 and 3 handler for client2
2.use HBase2.0 which have off-heap write path
> add manageable call queue
> -------------------------
>
> Key: HBASE-17932
> URL: https://issues.apache.org/jira/browse/HBASE-17932
> Project: HBase
> Issue Type: Improvement
> Components: IPC/RPC
> Reporter: xinxin fan
> Fix For: 1.1.2
>
> Attachments: ManageableCallQueue.pdf
>
>
> The Manageable Call Queue aims to provide a unified way to build:
> 1. Administor can create queue with specified number handler using shell
> command
> 2. Administor can increase/decrease the handler number for the specified
> queue using shell command
> 3. Administor can assign the same type request load to one queue, for
> example, administor can assign all the large object write requests to one
> queue, while assign all the small object write requests to another queue.
> the feature allow you to change the ipc queues/handlers at runtime and is a
> improvements for running multiple workloads on a single hbase cluster in some
> cases.
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