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https://issues.apache.org/jira/browse/HDFS-2130?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-2130:
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Description:
Once the other subtasks/parts of HDFS-2080 are complete, CRC32C will be a much
more efficient checksum algorithm than CRC32. Hence we should change the
default checksum to CRC32C.
However, in order to continue to support append against blocks created with the
old checksum, we will need to implement some kind of handshaking in the write
pipeline.
Fix Version/s: (was: 0.23.0)
> Switch default checksum to CRC32C
> ---------------------------------
>
> Key: HDFS-2130
> URL: https://issues.apache.org/jira/browse/HDFS-2130
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs client
> Reporter: Todd Lipcon
>
> Once the other subtasks/parts of HDFS-2080 are complete, CRC32C will be a
> much more efficient checksum algorithm than CRC32. Hence we should change the
> default checksum to CRC32C.
> However, in order to continue to support append against blocks created with
> the old checksum, we will need to implement some kind of handshaking in the
> write pipeline.
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