Parallelize reading of blocks within a stripe ---------------------------------------------
Key: MAPREDUCE-2267 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2267 Project: Hadoop Map/Reduce Issue Type: Improvement Components: contrib/raid Affects Versions: 0.22.0 Reporter: Ramkumar Vadali Assignee: Ramkumar Vadali Attachments: MAPREDUCE-2267.patch RAID code has several instances where several blocks of data have to be read to perform an operation. For example, computing a parity block requires reading the blocks of the source file. Similarly, generating a fixed block requires reading a parity block and the good blocks from the source file. These read operations proceed sequentially currently. RAID code should use a thread pool to increase the parallelism and thus reduce latency. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.