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https://issues.apache.org/jira/browse/HADOOP-1375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12504899
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stack commented on HADOOP-1375:
-------------------------------
My version of the patch, hadoop1375-v12.patch, removed parser subdir, renamed
the javacc file as HBaseShell.jj from QueryParser.jj, and output all generated
classes to a subdir named 'generated'. These changes are not included in your
latest patch. Also there is a regression where main class is again named
HbaseShell rather than HBaseShell.
If I type in a non-command, the shell still exits:
{code}
HBase > show;
Exception in thread "main" java.lang.
Error: Missing return statement in function
at org.apache.hadoop.hbase.shell.parser.QueryParser.parse(QueryParser.java:137)
at org.apache.hadoop.hbase.shell.HbaseShell.main(HbaseShell.java:65)
{code}
Can you catch these exceptions and instead output a nice message, something
like 'Unknown command: Type 'help' for usage' or some such thing?
The 'show' command does not seem to always work. E.g. type 'show scan;'.
I tried to use the scan command on the root table and got an exception: Type
'scan --ROOT--;'.
> 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
>
>
> 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}
> [# [EMAIL PROTECTED] ./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
> [# [EMAIL PROTECTED]
> {code}
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