Hi:
I just installed a Hbase 0.19.3. 'Hbase shell' works fine after the
installation, and I managed to create a table, and input a few rows through
the shell.
However, when I tried to run my java program to read rows, I got the
following error.
the code:
HBaseConfiguration config = new HBaseConfiguration();
if(config == null) {
System.out.println("configuration error");
return post;
}
HTable table = new HTable(config, "t1"); <<<<
line 18 where the error happens.
the error message:
Exception in thread "main" java.lang.NullPointerException
at
java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768)
at
org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:90)
at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:110)
at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:98)
at MyClient.main(MyClient.java:18)
I am new to HBase, can anyone help me figure out what went wrong? Thanks a
lot.
Regards
--
tp
