这是hbase 从0.9.x升级到1.x后HMaster与HRegionServer端口冲突问题 在hbase升级到1.0.0版本后,默认端口做了改动.其中16020端口是hmaster服务和hregionserver服务各自使用的默认端口,导致端口冲突. 官方文档相关信息如下 The HMaster server controls the HBase cluster. You can start up to 9 backup HMaster servers, which makes 10 t
HFile index HFile index, which is proportional to the total number of Data Blocks. The total amount of memory needed to hold the index can be estimated as (56+AvgKeySize)*NumBlocks. HFile的索引记录数量是与HFile所包含的Data Block数目成正比的.整个索引所需要的内存空间大约是(56+AvgKeySiz