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https://issues.apache.org/jira/browse/HBASE-3857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13072033#comment-13072033
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Mikhail Bautin commented on HBASE-3857:
---------------------------------------
@Todd: thank you for your comments!
@Michael: I will try to make changes and post another version of the patch
tonight or tomorrow.
By the way, I've been running an automated load test of the trunk with the
patch applied on a 5-node cluster, and it seems to work fine. Here are some
stats, FWIW, although without the details of this particular load test the
following is probably incomprehensible. I guess we will open-source the load
test later -- need to talk about this with Nicolas and other folks. It's
basically a bunch of random insertions and random full-row reads.
11/07/27 14:30:13 INFO utils.MultiThreadedAction: [W:20] Keys = 54313718, cols
= 2B, time = 17:15:04 Overall: [keys/s = 874, latency = 22 ms] Current: [keys/s
= 1323, latency = 14 ms]
11/07/27 14:30:13 INFO utils.MultiThreadedAction: [R:20] Keys = 100115674, cols
= 5B, time = 17:15:04 Overall: [keys/s = 1612, latency = 12 ms] Current:
[keys/s = 410, latency = 49 ms], verified = 50061516
> Change the HFile Format
> -----------------------
>
> Key: HBASE-3857
> URL: https://issues.apache.org/jira/browse/HBASE-3857
> Project: HBase
> Issue Type: New Feature
> Affects Versions: 0.90.4
> Reporter: Liyin Tang
> Assignee: Mikhail Bautin
> Attachments: 0001-review_hfile-v2-r1144693_2011-07-15_11_14_44.patch,
> 0001-review_hfile-v2-r1147350_2011-07-26_11_55_59.patch,
> hfile_format_v2_design_draft_0.1.pdf, hfile_format_v2_design_draft_0.3.pdf,
> hfile_format_v2_design_draft_0.4.odt
>
>
> In order to support HBASE-3763 and HBASE-3856, we need to change the format
> of the HFile. The new format proposal is attached here. Thanks for Mikhail
> Bautin for the documentation.
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