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Kai Zheng commented on HDFS-7715: --------------------------------- Jack, If you're worrying about the performance gain thru native implementation, please check out my initial experimental results based on in the new coder framework instead of HDFS-RAID in HADOOP-11540. If you need something to evaluate the performance, please check out HADOOP-11588. Hope this update helps. > Implement the Hitchhiker erasure coding algorithm > ------------------------------------------------- > > Key: HDFS-7715 > URL: https://issues.apache.org/jira/browse/HDFS-7715 > Project: Hadoop HDFS > Issue Type: Sub-task > Reporter: Zhe Zhang > Assignee: jack liuquan > Attachments: 7715-hitchhikerXOR-v2.patch, > HDFS-7715-hhxor-decoder.patch, HDFS-7715-hhxor-encoder.patch > > > [Hitchhiker | > http://www.eecs.berkeley.edu/~nihar/publications/Hitchhiker_SIGCOMM14.pdf] is > a new erasure coding algorithm developed as a research project at UC > Berkeley. It has been shown to reduce network traffic and disk I/O by 25%-45% > during data reconstruction. This JIRA aims to introduce Hitchhiker to the > HDFS-EC framework, as one of the pluggable codec algorithms. > The existing implementation is based on HDFS-RAID. -- This message was sent by Atlassian JIRA (v6.3.4#6332)