Can you use 0.94 for your client jar ? Please show us the NullPointerException stack.
Thanks On Jul 29, 2012, at 2:49 PM, Cyril Scetbon <[email protected]> wrote: > Hi, > > I'm testing AggregationClient functions to check if we could use coprocessors > for mathematical functions. > > The code I use is the following : > > package coreprocessor; > > import org.apache.hadoop.conf.Configuration; > import org.apache.hadoop.hbase.HBaseConfiguration; > import org.apache.hadoop.hbase.client.Scan; > import org.apache.hadoop.hbase.client.coprocessor.AggregationClient; > import org.apache.hadoop.hbase.util.Bytes; > > public class AggregationClientTest { > > private static final byte[] TABLE_NAME = Bytes.toBytes("ise"); > private static final byte[] CF = Bytes.toBytes("core"); > > public static void main(String[] args) throws Throwable { > > Configuration configuration = HBaseConfiguration.create(); > > configuration.setLong("hbase.client.scanner.caching", 1000); > AggregationClient aggregationClient = new AggregationClient( > configuration); > Scan scan = new Scan(); > scan.addColumn(CF, Bytes.toBytes("value")); > System.out.println("row count is " + > aggregationClient.rowCount(TABLE_NAME, null, scan)); > System.out.println("avg is " + aggregationClient.avg(TABLE_NAME, null, > scan)); > System.out.println("sum is " + aggregationClient.sum(TABLE_NAME, null, > scan)); > } > } > > The only one working is the rowCount function. For others I get a NPE error ! > I've checked that my table use only Long values for the column on which I > work, and I've only one row in my table : > > ROW COLUMN+CELL > > > id-cyr1 column=core:value, > timestamp=1343596419845, value=\x00\x00\x00\x00\x00\x00\x00\x0A > > > The only thing I can add is that my hbase server's version is 0.94.0 and that > I use version 0.92.0 of the hbase jar > > any idea why it doesn't work ? > > thanks > Cyril SCETBON >
