Dynamic client configuration updating policy information
instance has all HBase daemons — the Master, Region Servers, and Zoo Keeper — running in a single JVM persisting to the local filesystem. We will show you how to create a table in HBase using the Prior to HBase 0.94.x, HBase expected the loopback IP address to be 127.0.0.1.Ubuntu and some other distributions default to 127.0.1.1 and this will cause problems for you. for detail After working your way through quickstart standalone mode, you can re-configure HBase to run in pseudo-distributed mode.Your cluster’s operation can hiccup because of any of a myriad set of reasons from bugs in HBase itself through misconfigurations — misconfiguration of HBase but also operating system misconfigurations — through to hardware problems whether it be a bug in your network card drivers or an underprovisioned RAM bus (to mention two recent examples of hardware issues that manifested as "HBase is slow").You will also need to do a recalibration if up to this your computing has been bound to a single box.The phrases /supported/, /not supported/, /tested/, and /not tested/ occur several places throughout this guide.In the interest of clarity, here is a brief explanation of what is generally meant by these phrases, in the context of HBase.
For most configurations, a restart is needed for servers to pick up changes.Pseudo-distributed mode means that HBase still runs completely on a single host, but each HBase daemon (HMaster, HRegion Server, and Zoo Keeper) runs as a separate process: in standalone mode all daemons ran in one jvm process/instance.By default, unless you configure the This procedure assumes that you have configured Hadoop and HDFS on your local system and/or a remote system, and that they are running and available. The guide on Setting up a Single Node Cluster in the Hadoop documentation is a good starting point.If you think this designation should be reconsidered for a given feature or use pattern, file a JIRA or start a discussion on one of the mailing lists.In the context of Apache HBase, /not tested/ means that a feature or use pattern may or may not work in a given way, and may or may not corrupt your data or cause operational issues. If you can provide proof that a feature designated as /not tested/ does work in a given way, please submit the tests and/or the metrics so that other users can gain certainty about such features or use patterns.