caichangqi/ella
A Monitor over HBase, including Table,Region,RegionServer,Zookeeper monitoring etc.
apple-boot启动过程中发布广播,apple-monitor接收广播信息,然后通过jmx自动监控应用
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A Monitor over HBase, including Table,Region,RegionServer,Zookeeper monitoring etc.
Several implementation for building hbase secondary index.
Keeping three copies of the same data is very costly, especially when the size of storage is huge. One idea is to reduce the replication factor and do erasure coding of a set of blocks so that the over probability of failure of a block remains the same as before. Many forms of error-correcting codes are available, see http://en.wikipedia.org/wiki/Erasure_code. Also, recent research from CMU has described DiskReduce https://opencirrus.org/system/files/Gibson-OpenCirrus-June9-09.ppt. An idea is to discuss implementation strategies that are not part of base HDFS, but is a layer on top of HDFS.
适合hadoop2.2.0的hdfs-raid