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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1375) a simple parser for hbase.
Date Sat, 16 Jun 2007 00:01:26 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12505410
] 

stack commented on HADOOP-1375:
-------------------------------

Patch is improving.

Here's a couple of quick issues:

I created table named 'test'. I then tried to add some data:

{code}
HBase > set test values('columnfamily_name:x', 'y') where row="z";
07/06/15 16:54:24 DEBUG hbase.HClient: No servers for test. Doing a find...
07/06/15 16:54:25 DEBUG hbase.HClient: Found 1 server(s) for location: address: 208.76.47.106:60010,
regioninfo: regionname: --ROOT--__0, startKey: <>, tableDesc: {name: --ROOT--, families:
{info:=(info:, max versions: 1, compression: none, in memory: false, max value length: 2147483647,
bloom filter: none)}} for tablename --META--07/06/15 16:54:25 DEBUG hbase.HClient: Found 1
server(s) for location: address: 208.76.47.106:60010, regioninfo: regionname: --META--__1,
startKey: <>, tableDesc: {name: --META--, families: {info:=(info:, max versions: 1,
compression: none, in memory: false, max value length: 2147483647, bloom filter: none)}} for
tablename test
07/06/15 16:54:25 DEBUG hbase.HClient: Server  is serving: address: 208.76.47.106:60010, regioninfo:
regionname: test__8954882840030601779, startKey: <>, tableDesc: {name: test, families:
{columnfamily_name:=(columnfamily_name:, max versions: 3, compression: none, in memory: false,
max value length: 2147483647, bloom filter: none)}}
Exception in thread "main" java.lang.NullPointerException       
   at org.apache.hadoop.hbase.shell.cmds.Set.execute(Set.java:41)        
   at org.apache.hadoop.hbase.shell.HBaseShell.main(HBaseShell.java:68)
{code}

If I do other than 'scan tables', it no longer throws an exception but the message doesn't
make much sense:
{code}HBase > show scan;
Missing Parameters.
{code}
Perhaps just say 'unimplemented' if its not.

Can you make it so I can scan root and meta tables?

Your patch has odd file on the end -- saveversion.sh on end -- and it was made at /root rather
than inside ${HADOOP_HOME}.

> a simple parser for hbase.
> --------------------------
>
>                 Key: HADOOP-1375
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1375
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: contrib/hbase
>         Environment: All environments 
>            Reporter: udanax
>            Priority: Minor
>         Attachments: hadoop1375-v12.patch, jline-0.9.91.jar, patch.txt, patch.txt, patch.txt,
patch.txt, patch.txt, patch.txt, patch.txt, patch.txt, patch.txt, patch.txt
>
>
> http://wiki.apache.org/lucene-hadoop/HbaseShell (work in progress)
> HBase Shell is developed to achieve the following goals. 
>  * Generic Monitoring Function 
>  * A Simplified Import/Export/Migrate Functionality Between different data sources (Hadoop,
HBase) 
>  * A Simplified processing of a logical data model 
>  * A Simplified algebraic operations 
>    (Parallel Numerical Analysis by abstracting/numericalizing points, lines, or plane
data across multiple maps in HBase.)
> {code}
> [# root@localhost] ./bin/hadoop jar ./build/hadoop-hbase org.apache.hadoop.hbase.shell.HbaseShell
> Hbase > help;
> blah blah...
> Hbase > create webtable 
>      --> columnfamilies('anchors', 'language') limit=3;
> Hbase > set webtable values('anchors:http://www.udanax.org/','opensource') where row="http://www.hadoop.co.kr";
> Hbase > scan webtable where row="http://www.hadoop.co.kr";
> blah blah...
> Hbase > set webtable values('language:kr','euc-kr') where row="http://www.hadoop.co.kr";
> Hbase > scan webtable where row="http://www.hadoop.co.kr" and column="language:kr";
> blah blah...
> Hbase > scan webtable;
> Hbase > exit
> [# root@localhost] 
> {code}

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