I have closely observed all work done in this. This featute is very important for the storage only problems.
Major work done by Nicholas and later Jing. Thanks to everyone who has participated in this. I feel the code is in good state to be merged to trunk. +1 for the merge. Regards, Vinay On Sep 8, 2014 1:29 AM, "Tsz Wo Sze" <szets...@yahoo.com.invalid> wrote: > Hi HDFS dev, > > We would like to propose merging the development branch > HDFS-6584 back to trunk. > > The work of HDFS-6584 is to support Archival Storage in > HDFS. Hadoop needs a solution to > decouple growing storage capacity from compute capacity. Nodes with higher > density and less expensive storage with low compute power are becoming > available and can be used as cold storage in the clusters. Based on > policy, the > data from hot can be moved to the cold. Adding more nodes to the cold > storage > can grow the storage independent of the compute capacity in the cluster. > > The Archival Storage feature introduces a new concept of > storage policies (Hot, Warm, Cold) to HDFS and allows files to be stored in > different storage medias (DISK, ARCHIVE) according to the storage policy. > A new data migration tool is added for > archiving data. For more details, please > see the design doc posted in HDFS-6584. > > There are currently 22 sub-tasks in HDFS-6584. The main feature of > HDFS-6584 is implemented > and tested. The remaining work is adding > user documentation, adding a test plan doc, adding more tests and fixing > some > minor bugs. We will finish all of the > remaining work before merging the branch to trunk. > > The contributors of this work include Jing Zhao, Arpit > Agarwal, Vinayakumar B, Suresh Srinivas, Sanjay Radia, Jitendra Pandey, > Haohui > Mai and Tsz-Wo Nicholas Sze. We thank > the community for giving valuable comments and feedbacks on the design of > this > work. > > The vote will last for 7 days. Of course, I am +1 on it. > > Regards, > Tsz-Wo >
