[
https://issues.apache.org/jira/browse/HBASE-11927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Apekshit Sharma updated HBASE-11927:
------------------------------------
Attachment: after-randomWrite1M-0.5%.svg
before-randomWrite1M-5%.svg
before-compact-22%.svg
after-compact-2%.svg
HBASE-11927-v4.patch
- removed duplicated defaults, now there is single one in HConstants.
- testing: added test and removed obsolete test.
- cleaned up dead code from ChecksumUtil.
- Attaching flame graphs.
TODO: write release note.
> Use Native Hadoop Library for HFile checksum (And flip default from CRC32 to
> CRC32C)
> ------------------------------------------------------------------------------------
>
> Key: HBASE-11927
> URL: https://issues.apache.org/jira/browse/HBASE-11927
> Project: HBase
> Issue Type: Bug
> Reporter: stack
> Assignee: Apekshit Sharma
> Attachments: HBASE-11927-v1.patch, HBASE-11927-v2.patch,
> HBASE-11927-v4.patch, HBASE-11927.patch, after-compact-2%.svg,
> after-randomWrite1M-0.5%.svg, before-compact-22%.svg,
> before-randomWrite1M-5%.svg, c2021.crc2.svg, c2021.write.2.svg,
> c2021.zip.svg, compact-with-native.svg, compact-without-native.svg,
> crc32ct.svg
>
>
> Up in hadoop they have this change. Let me publish some graphs to show that
> it makes a difference (CRC is a massive amount of our CPU usage in my
> profiling of an upload because of compacting, flushing, etc.). We should
> also make use of native CRCings -- especially the 2.6 HDFS-6865 and ilk -- in
> hbase but that is another issue for now.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
