Brandon Li created HDFS-4421:
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Summary: Remove verify checksum option from BlockSender
Key: HDFS-4421
URL: https://issues.apache.org/jira/browse/HDFS-4421
Project: Hadoop HDFS
Issue Type: Improvement
Components: datanode
Reporter: Brandon Li
Assignee: Brandon Li
When users read data from HDFS and require checksum verification, the checksum
is validated at client side before sending data to the user application.
Currently BlockSender has the option (corruptChecksumOk/verifyChecksum) to
verify checksum. This option is not turned on anywhere in current code.
Validating checksum on the server(DataNode) side is redundant since DFSClient
still needs to do the same work again due to possible errors introduced by the
data transportation from the server to the client.
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