FSInputChecker and FSOutputSummer should allow better access to user buffer
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Key: HADOOP-3205
URL: https://issues.apache.org/jira/browse/HADOOP-3205
Project: Hadoop Core
Issue Type: Bug
Components: fs
Reporter: Raghu Angadi
Assignee: Raghu Angadi
Implementations of FSInputChecker and FSOutputSummer like DFS do not have
access to full user buffer. At any time DFS can access only up to 512 bytes
even though user usually reads with a much larger buffer (often controlled by
io.file.buffer.size). This requires implementations to double buffer data if an
implementation wants to read or write larger chunks of data from underlying
storage.
We could separate changes for FSInputChecker and FSOutputSummer into two
separate jiras.
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