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jack liuquan commented on HADOOP-11828: --------------------------------------- Hi Kai, Thank you for your review. bq.* Please rebase with latest branch. Your codebase is rather old. sorry, I'm not sure. I add my codes based on the latest HDFS-7285 branch. Is that not right? bq.* Please remove codes for other modes for now, even in tests. OK, I will remove the codes not used in Hitchhiker-XOR. > Implement the Hitchhiker erasure coding algorithm > ------------------------------------------------- > > Key: HADOOP-11828 > URL: https://issues.apache.org/jira/browse/HADOOP-11828 > Project: Hadoop Common > Issue Type: Sub-task > Reporter: Zhe Zhang > Assignee: jack liuquan > Attachments: 7715-hitchhikerXOR-v2-testcode.patch, > 7715-hitchhikerXOR-v2.patch, HADOOP-11828-hitchhikerXOR-V3.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)