[
https://issues.apache.org/jira/browse/HBASE-19389?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yu Li updated HBASE-19389:
--------------------------
Priority: Major (was: Minor)
Component/s: (was: hbase)
Performance
This is something we found and resolved before Singles' Day and now running in
production, JFYI. Please let us know if any comments on the design of the patch
or any better idea. Thanks.
[~chancelq] please wait another day for comments on design, then upload the
patch to [review-board|https://reviews.apache.org/dashboard/] for easier
review. Thanks.
> RS's handlers are all busy when writing many columns (more than 1000 columns)
> ------------------------------------------------------------------------------
>
> Key: HBASE-19389
> URL: https://issues.apache.org/jira/browse/HBASE-19389
> Project: HBase
> Issue Type: Improvement
> Components: Performance
> Affects Versions: 2.0.0
> Environment: 2000+ Region Servers
> PCI-E ssd
> Reporter: Chance Li
> Assignee: Chance Li
> Fix For: 2.0.0, 3.0.0
>
> Attachments: CSLM-concurrent-write.png, metrics-1.png, ycsb-result.png
>
>
> In a large cluster, with a large number of clients, we found the RS's
> handlers are all busy sometimes. And after investigation we found the root
> cause is about CSLM, such as compare function heavy load. We reviewed the
> related WALs, and found that there were many columns (more than 1000 columns)
> were writing at that time.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
