hbase - hbase シェルでスキャン テーブルを実行中に「ipc.RpcClient: Retrying connect to server」エラーが発生しました

Question

私はHBaseが初めてです。クイックスタート 1.2.2 でインストールした後、HBase シェルでテーブルmytableをスキャンすると、次のエラーがスローされることがあります。

1.8.7-p357 :005 > scan 'Customer'
ROW                                                          COLUMN+CELL                                                                                                                                                                     
2014-12-01 15:51:25,158 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 0 time(s).
2014-12-01 15:51:25,259 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 1 time(s).
2014-12-01 15:51:25,361 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 2 time(s).
2014-12-01 15:51:27,922 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 0 time(s).
2014-12-01 15:51:28,023 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 1 time(s).
2014-12-01 15:51:28,125 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 2 time(s).
2014-12-01 15:51:30,249 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 0 time(s).
2014-12-01 15:51:30,350 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 1 time(s).
2014-12-01 15:51:30,452 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 2 time(s).
2014-12-01 15:51:33,202 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 0 time(s).
2014-12-01 15:51:33,303 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 1 time(s).
2014-12-01 15:51:33,404 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 2 time(s).
2014-12-01 15:51:35,521 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 0 time(s).
2014-12-01 15:51:35,623 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 1 time(s).
2014-12-01 15:51:35,724 INFO  [main] ipc.RpcClient: Retrying connect to server: localhost/127.0.0.1:40228 after sleeping 100ms. Already tried 2 time(s).

HBase クライアント API も実行例外をスローしますが、この問題に対するアドバイスはありますか?