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https://issues.apache.org/jira/browse/HDFS-10460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15346207#comment-15346207
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Rakesh R commented on HDFS-10460:
---------------------------------
Thanks a lot [~drankye] for the detailed reviews and continuous support in
completing this task.
> Erasure Coding: Recompute block checksum for a particular range less than
> file size on the fly by reconstructing missed block
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-10460
> URL: https://issues.apache.org/jira/browse/HDFS-10460
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Reporter: Rakesh R
> Assignee: Rakesh R
> Fix For: 3.0.0-alpha1
>
> Attachments: HDFS-10460-00.patch, HDFS-10460-01.patch,
> HDFS-10460-02.patch, HDFS-10460-03.patch, HDFS-10460-04.patch,
> HDFS-10460-05.patch
>
>
> This jira is HDFS-9833 follow-on task to address reconstructing block and
> then recalculating block checksum for a particular range query.
> For example,
> {code}
> // create a file 'stripedFile1' with fileSize = cellSize * numDataBlocks =
> 65536 * 6 = 393216
> FileChecksum stripedFileChecksum = getFileChecksum(stripedFile1, 10, true);
> {code}
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