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Andrew Purtell commented on HBASE-2098: --------------------------------------- @Berk: Thank you for all of the very helpful comment. > [EC2] Build a HA cluster > ------------------------ > > Key: HBASE-2098 > URL: https://issues.apache.org/jira/browse/HBASE-2098 > Project: Hadoop HBase > Issue Type: Sub-task > Reporter: Andrew Purtell > Assignee: Andrew Purtell > Priority: Minor > Fix For: 0.21.0 > > > The Hadoop NameNode is a single point of failure. If the master instance > fails, HDFS is down; therefore, HBase as well. So we do not try to deploy > HBase in a multimaster configuration for that reason. Instead we colocate the > HDFS NameNode and HBase HMaster on the same instance and run with its failure > as a known risk. As these EC2 scripts are starter scripts which can (and > should) be customized, this is ok, but we can do better. We should deploy a > fully fault tolerant Hadoop+HBase cluster as a worked example of how to do > it. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.