java通过phoenix的jdbc链接hbase数据库遇到如下情况：

查看日志发现phoenix维护的表system.function 的文件缺失了（在hdfs上），就是有节点掉了。

用命令

$HBASE_PATH/bin/hbase hbck

查看确实有blk丢失，就是应为node掉了。

  1. hdfs.DFSClient: Could not obtain BP-886382026-192.168.1.20-1515141616941:blk_1074071596_330784 from any node: 
    java.io.IOException: No live nodes contain current block No live nodes contain current block Block locations: Dead nodes: . Will get new block locations from namenode and retry...
在用 hdfs dfsadmin -report 
查看是哪个节点掉了，重新启动掉线的节点以及守护进程，之后在运行代码，完美通过！
 
以下是报错的堆栈信息：
 
  1. 19/01/08 11:13:49 INFO zookeeper.ClientCnxn: EventThread shut down
  2. org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (SYSTEM.FUNCTION)
  3.     at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:1549)
  4.     at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1388)
  5.     at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
  6.     at com.rs.java.db.CreatConnect.getPhoeConnect(CreatConnect.java:45)
  7.     at com.rs.java.mapreduce.oneTuoN.largebandwidth.TheTest.main(TheTest.java:25)
  8.     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  9.     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  10.     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  11.     at java.lang.reflect.Method.invoke(Method.java:498)
  12.     at org.apache.hadoop.util.RunJar.run(RunJar.java:239)
  13.     at org.apache.hadoop.util.RunJar.main(RunJar.java:153)
  14. Caused by: org.apache.phoenix.exception.PhoenixIOException: SYSTEM.FUNCTION
  15.     at org.apache.phoenix.util.ServerUtil.parseServerException(ServerUtil.java:116)
  16.     at org.apache.phoenix.query.ConnectionQueryServicesImpl.ensureTableCreated(ConnectionQueryServicesImpl.java:1153)
  17.     at org.apache.phoenix.query.ConnectionQueryServicesImpl.createTable(ConnectionQueryServicesImpl.java:1434)
  18.     at org.apache.phoenix.schema.MetaDataClient.createTableInternal(MetaDataClient.java:2624)
  19.     at org.apache.phoenix.schema.MetaDataClient.createTable(MetaDataClient.java:1040)
  20.     at org.apache.phoenix.compile.CreateTableCompiler$2.execute(CreateTableCompiler.java:212)
  21.     at org.apache.phoenix.jdbc.PhoenixStatement$2.call(PhoenixStatement.java:393)
  22.     at org.apache.phoenix.jdbc.PhoenixStatement$2.call(PhoenixStatement.java:376)
  23.     at org.apache.phoenix.call.CallRunner.run(CallRunner.java:53)
  24.     at org.apache.phoenix.jdbc.PhoenixStatement.executeMutation(PhoenixStatement.java:374)
  25.     at org.apache.phoenix.jdbc.PhoenixStatement.executeMutation(PhoenixStatement.java:363)
  26.     at org.apache.phoenix.jdbc.PhoenixStatement.execute(PhoenixStatement.java:1707)
  27.     at org.apache.phoenix.query.ConnectionQueryServicesImpl.createOtherSystemTables(ConnectionQueryServicesImpl.java:2555)
  28.     at org.apache.phoenix.query.ConnectionQueryServicesImpl.access$900(ConnectionQueryServicesImpl.java:264)
  29.     at org.apache.phoenix.query.ConnectionQueryServicesImpl$12.call(ConnectionQueryServicesImpl.java:2466)
  30.     at org.apache.phoenix.query.ConnectionQueryServicesImpl$12.call(ConnectionQueryServicesImpl.java:2389)
  31.     at org.apache.phoenix.util.PhoenixContextExecutor.call(PhoenixContextExecutor.java:76)
  32.     at org.apache.phoenix.query.ConnectionQueryServicesImpl.init(ConnectionQueryServicesImpl.java:2389)
  33.     at org.apache.phoenix.jdbc.PhoenixDriver.getConnectionQueryServices(PhoenixDriver.java:255)
  34.     at org.apache.phoenix.jdbc.PhoenixEmbeddedDriver.createConnection(PhoenixEmbeddedDriver.java:150)
  35.     at org.apache.phoenix.jdbc.PhoenixDriver.connect(PhoenixDriver.java:221)
  36.     at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:38)
  37.     at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:582)
  38.     at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:1556)
  39.     at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:1545)
  40.     ... 10 more
  41. Caused by: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hbase.TableExistsException): SYSTEM.FUNCTION
  42.     at org.apache.hadoop.hbase.master.procedure.CreateTableProcedure.prepareCreate(CreateTableProcedure.java:286)
  43.     at org.apache.hadoop.hbase.master.procedure.CreateTableProcedure.executeFromState(CreateTableProcedure.java:107)
  44.     at org.apache.hadoop.hbase.master.procedure.CreateTableProcedure.executeFromState(CreateTableProcedure.java:59)
  45.     at org.apache.hadoop.hbase.procedure2.StateMachineProcedure.execute(StateMachineProcedure.java:139)
  46.     at org.apache.hadoop.hbase.procedure2.Procedure.doExecute(Procedure.java:499)
  47.     at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execProcedure(ProcedureExecutor.java:1148)
  48.     at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:943)
  49.     at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execLoop(ProcedureExecutor.java:896)
  50.     at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$400(ProcedureExecutor.java:78)
  51.     at org.apache.hadoop.hbase.procedure2.ProcedureExecutor$2.run(ProcedureExecutor.java:498)
  52. Exception in thread "main" java.lang.NullPointerException
  53.     at com.rs.java.mapreduce.oneTuoN.largebandwidth.TheTest.main(TheTest.java:27)
  54.     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  55.     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  56.     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  57.     at java.lang.reflect.Method.invoke(Method.java:498)
  58.     at org.apache.hadoop.util.RunJar.run(RunJar.java:239)
  59.     at org.apache.hadoop.util.RunJar.main(RunJar.java:153)

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