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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11927) Use Native Hadoop Library for HFile checksum (And flip default from CRC32 to CRC32C)
Date Fri, 15 May 2015 21:56:03 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14546237#comment-14546237
] 

Hudson commented on HBASE-11927:
--------------------------------

SUCCESS: Integrated in HBase-TRUNK #6484 (See [https://builds.apache.org/job/HBase-TRUNK/6484/])
HBASE-11927 Use Native Hadoop Library for HFile checksum. (Apekshit) (stack: rev 988593857f5150e5d337ad6b8bf3ba0479441f3e)
* hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestChecksum.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/ChecksumUtil.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFile.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlock.java
* hbase-common/src/main/resources/hbase-default.xml
* hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestStoreFile.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileContextBuilder.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileContext.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/util/ChecksumType.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HStore.java


> 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: Apekshit Sharma
>             Fix For: 2.0.0, 1.2.0
>
>         Attachments: 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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