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From Zhenzhen Yan <zhenzhen....@seagate.com>
Subject Re: Encountered problems when prefetch META table
Date Fri, 19 Jul 2013 22:05:24 GMT
Hi, Ted, in the hbase shell I typed 'list', the 'HBaseSamples' table is not
there. Following is the  java file.

package hbase;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import static org.apache.hadoop.hbase.util.Bytes.*;

public class PutExample {

public static void main(String[] args) throws IOException {
Configuration conf = HBaseConfiguration.create();
HTable hTable = new HTable(conf, "HBaseSamples");
 Put put1 = new Put(toBytes("row1"));
put1.add(toBytes("test"), toBytes("col1"), toBytes("val1"));
put1.add(toBytes("test"), toBytes("col2"), toBytes("val2"));
hTable.put(put1);
 hTable.close();
}

}



On Fri, Jul 19, 2013 at 3:33 PM, Ted Yu <yuzhihong@gmail.com> wrote:

> Exception in thread "main" org.apache.hadoop.hbase.TableNotFoundException:
> HBaseSamples
>
> Were you able to access HBaseSamples in hbase shell ?
>
> Did you see any exception in master log w.r.t. the creation of HBaseSamples
> ?
>
> Cheers
>
> On Fri, Jul 19, 2013 at 2:29 PM, Zhenzhen Yan <zhenzhen.yan@seagate.com
> >wrote:
>
> > Hello, I'm a newbie to Hadoop HBase.
> > I downloaded and installed Hadoop Traning Ubundu Image (Cloudera
> > Distribution for Hadoop).
> > When I tried to create a table and create put instances using java API. I
> > got the following error. Could anybody help me out? Thanks!
> >
> > 13/07/19 16:46:45 WARN
> client.HConnectionManager$HConnectionImplementation:
> > Encountered problems when prefetch META table:
> > org.apache.hadoop.hbase.TableNotFoundException: Cannot find row in .META.
> > for table: HBaseSamples, row=HBaseSamples,,99999999999999
> > at
> > org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:158)
> > at
> >
> org.apache.hadoop.hbase.client.MetaScanner.access$000(MetaScanner.java:52)
> > at
> >
> org.apache.hadoop.hbase.client.MetaScanner$1.connect(MetaScanner.java:130)
> > at
> >
> org.apache.hadoop.hbase.client.MetaScanner$1.connect(MetaScanner.java:127)
> > at
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager.execute(HConnectionManager.java:360)
> > at
> > org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:127)
> > at
> > org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:103)
> > at
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.prefetchRegionCache(HConnectionManager.java:876)
> > at
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:930)
> > at
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:818)
> > at
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:782)
> > at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:249)
> > at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:213)
> > at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:171)
> > at hbase.PutExample.main(PutExample.java:15)
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at
> >
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > at
> >
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > at java.lang.reflect.Method.invoke(Method.java:597)
> > at org.apache.hadoop.util.RunJar.main(RunJar.java:208)
> > Exception in thread "main"
> org.apache.hadoop.hbase.TableNotFoundException:
> > HBaseSamples
> > at
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:952)
> > at
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:818)
> > at
> >
> >
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:782)
> > at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:249)
> > at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:213)
> > at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:171)
> > at hbase.PutExample.main(PutExample.java:15)
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at
> >
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > at
> >
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > at java.lang.reflect.Method.invoke(Method.java:597)
> > at org.apache.hadoop.util.RunJar.main(RunJar.java:208)
> >
>

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