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https://issues.apache.org/jira/browse/HDFS-8430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15110436#comment-15110436
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Kai Zheng commented on HDFS-8430:
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bq. Added a new protocol method rawBlockChecksum() to retrieve the whole raw
block checksum or CRC32 data. ...
Now offset and length are added in the new protocol to specify the range of raw
block checksum data to retrieve. This is necessary because even raw block
checksum data can be big if large block size is used for a large file.
> Erasure coding: compute file checksum for stripe files
> ------------------------------------------------------
>
> Key: HDFS-8430
> URL: https://issues.apache.org/jira/browse/HDFS-8430
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: HDFS-7285
> Reporter: Walter Su
> Assignee: Kai Zheng
> Attachments: HDFS-8430-poc1.patch
>
>
> HADOOP-3981 introduces a distributed file checksum algorithm. It's designed
> for replicated block.
> {{DFSClient.getFileChecksum()}} need some updates, so it can work for striped
> block group.
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