Ryan, can you elaborate how compactions create data locality? -Jack
On Oct 11, 2010, at 10:12 PM, Ryan Rawson <[email protected]> wrote: > We don't attempt to optimize region placement with hdfs locations yet. A > reason why is because on a long lived cluster compactions create the > locality you are looking for. Furthermore, in the old master such an > optimization was really hard to do. The new master should make it easier to > write such 1 off hacks. > On Oct 11, 2010 9:43 PM, "Tao Xie" <[email protected]> wrote: >> hi, all >> I set hdfs replica=1 when running hbase. And DN and RS co-exists on each >> slave node. So the data in the regions managed by RS will be stored on its >> local data node, rite? >> But when I restart hbase and hbase client does gets on RS, datanode will >> read data from remote data nodes. Does that mean when RS restart, the >> regions are re-arranged? If so, will hbase is clever enough to re-adjust > the >> regions? I'm not clear about the behind mechanism so anyone can give me > some >> explanations? Thanks.
