[HDFS-9694] Make existing DFSClient#getFileChecksum() work for striped blocks - ASF JIRA

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Details

Type: Sub-task
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 3.0.0-alpha1
Component/s: None
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Makes the getFileChecksum API works with striped layout EC files. Checksum computation done by block level in the distributed fashion. The current API does not support to compare the checksum generated with normal file and the checksum generated for the same file but in striped layout.

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Makes the getFileChecksum API works with striped layout EC files. Checksum computation done by block level in the distributed fashion. The current API does not support to compare the checksum generated with normal file and the checksum generated for the same file but in striped layout.

Description

This is a sub-task of HDFS-8430 and will get the existing API FileSystem#getFileChecksum(path) work for striped files. It will also refactor existing codes and layout basic work for subsequent tasks like support of the new API proposed there.