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Posted to issues@hbase.apache.org by "Nick Dimiduk (JIRA)" <ji...@apache.org> on 2016/02/11 17:48:18 UTC
[jira] [Reopened] (HBASE-11927) Use Native Hadoop Library for HFile
checksum (And flip default from CRC32 to CRC32C)
[ https://issues.apache.org/jira/browse/HBASE-11927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nick Dimiduk reopened HBASE-11927:
----------------------------------
reopening for 1.1 backport.
> 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: Improvement
> Components: Performance
> Reporter: stack
> Assignee: Appy
> Fix For: 2.0.0, 1.2.0
>
> Attachments: HBASE-11927-branch-1.1.patch, HBASE-11927-v1.patch, HBASE-11927-v2.patch, HBASE-11927-v4.patch, HBASE-11927-v5.patch, HBASE-11927-v6.patch, HBASE-11927-v7.patch, HBASE-11927-v8.patch, HBASE-11927-v8.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, 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.
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