Hi, 1. Yes. Client applications can start/read/write even when there is no master. 2. HBase already uses ZooKeeper.
You may want to have to look at the hbase reference guide ( http://hbase.apache.org/book.html). Nicolas On Mon, Apr 8, 2013 at 4:39 PM, Brady Zhong <[email protected]>wrote: > Hi all, > > My name is Brady Zhong, a college student using HBase to develop our own > project. Currently I confronted with a problem. Since we need some kind of > high availability, we hope HBase can keep available even though the HMaster > goes down. Here're my questions: > > 1. Can HBase work during the node failure of HMaster? Can users write or > read the database before the switch and recovery of HMaster? > 2. Why not use Zookeeper as distributed lock service for HBase, like Chubby > for Google Big Table? > > Thanks very much for any help in advance. > > > Best regards, > Brady Zhong >
