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The "ZooKeeper/HBaseMeetingNotes" page has been changed by stack. http://wiki.apache.org/hadoop/ZooKeeper/HBaseMeetingNotes?action=diff&rev1=1&rev2=2 -------------------------------------------------- also see: https://issues.apache.org/jira/browse/ZOOKEEPER-545 + zk: Mahadev mentioned that zk team commonly sees the types of issues hbase experiences at least on first deploy but that after tuning and research, all settles down + * hbase - We'd like to know what kind of limits a 3 nodes quorum have. What's the reasonable amount of znodes, reads and writes per sec it can support? How many watches? zk: this is the easiest to see http://hadoop.apache.org/zookeeper/docs/current/zookeeperOver.html#Performance however this is for optimum conditions (dedicated server class host with sufficient memory and dedicated spindle for the log) and a large number of clients. With smaller number of clients using synchronous operations you are probably limited more by network latency than anything. @@ -29, +31 @@ Background: + + ''Below is stale now, excerpted from another document. For latest see [[http://wiki.apache.org/hadoop/Hbase/MasterRewrite||HBase Master Rewrite]]'' Below are some notes from our master rewrite design doc. Its from the section where we talk of moving all state and schemas to zk:
