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The following page has been changed by DrakeMcSmooth: http://wiki.apache.org/hadoop/Hbase/Troubleshooting ------------------------------------------------------------------------------ * Master's log contains repeated instances of the following block: ~-INFO org.apache.hadoop.ipc.Client: Retrying connect to server: /127.0.0.1:60020. Already tried 1 time(s).[[BR]] INFO org.apache.hadoop.ipc.Client: Retrying connect to server: /127.0.0.1:60020. Already tried 2 time(s).[[BR]] - ... + ...[[BR]] INFO org.apache.hadoop.ipc.RPC: Server at /127.0.0.1:60020 not available yet, Zzzzz...-~ * Region Servers' logs contains repeated instances of the following block: - ~-INFO org.apache.hadoop.ipc.Client: Retrying connect to server: masternode/192.168.100.50:60000. Already tried 9 time(s). + ~-INFO org.apache.hadoop.ipc.Client: Retrying connect to server: masternode/192.168.100.50:60000. Already tried 1 time(s).[[BR]] - INFO org.apache.hadoop.ipc.Client: Retrying connect to server: masternode/192.168.100.50:60000. Already tried 10 time(s). + INFO org.apache.hadoop.ipc.Client: Retrying connect to server: masternode/192.168.100.50:60000. Already tried 2 time(s).[[BR]] + ...[[BR]] INFO org.apache.hadoop.ipc.RPC: Server at masternode/192.168.100.50:60000 not available yet, Zzzzz...-~ * Note that the Master believes the Region Servers have the IP of 127.0.0.1 - which is localhost and resolves to the master's own localhost. === Causes === * The Region Servers are erroneously informing the Master that their IP addresses are 127.0.0.1. === Resolution === - * Modify <code>/etc/hosts</code> on the region servers, from + * Modify '''/etc/hosts''' on the region servers, from {{{ # Do not remove the following line, or various programs # that require network functionality will fail.
