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Posted to common-dev@hadoop.apache.org by "Raghu Angadi (JIRA)" <ji...@apache.org> on 2008/04/08 08:15:24 UTC
[jira] Created: (HADOOP-3205) FSInputChecker and FSOutputSummer
should allow better access to user buffer
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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