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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2019/01/18 06:12:00 UTC
[jira] [Commented] (HBASE-21738) Latency spike happen when memstore
flushing in 100% put case
[ https://issues.apache.org/jira/browse/HBASE-21738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16745814#comment-16745814 ]
stack commented on HBASE-21738:
-------------------------------
What do you think is happening [~openinx]? We are blocking writes somehow when we flush?
> Latency spike happen when memstore flushing in 100% put case
> ------------------------------------------------------------
>
> Key: HBASE-21738
> URL: https://issues.apache.org/jira/browse/HBASE-21738
> Project: HBase
> Issue Type: Sub-task
> Components: Performance
> Reporter: Zheng Hu
> Assignee: Zheng Hu
> Priority: Major
> Attachments: add-some-log.patch, image-2019-01-18-14-03-28-662.png, log.txt
>
>
> Made some performance test for 100% put case in branch-2 before.
> We can see that there are many latency peak in p999 latency curve , and the peak time are almost the point time which our region is flushing.
> See the [hbase20-ssd-put-10000000000-rows-latencys-and-qps |https://issues.apache.org/jira/secure/attachment/12955341/12955341_image-2019-01-18-14-03-28-662.png]
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