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Posted to dev@hbase.apache.org by "David Newcomer (JIRA)" <ji...@apache.org> on 2015/04/30 03:18:06 UTC
[jira] [Created] (HBASE-13599) The Example Provided in Section 69:
Examples of the Documentation Does Not Compile
David Newcomer created HBASE-13599:
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Summary: The Example Provided in Section 69: Examples of the Documentation Does Not Compile
Key: HBASE-13599
URL: https://issues.apache.org/jira/browse/HBASE-13599
Project: HBase
Issue Type: Bug
Components: documentation
Affects Versions: 1.0.0
Reporter: David Newcomer
Priority: Minor
I'm trying to build and run the example java code I found in the HBase Documentation, and I'm running into several issues.
1. I don't have the code/library used in the following import:
import static com.example.hbase.Constants.*;
2. All of the methods in createOrOverwrite() that use table.getName() should instead be using table.getTableName()
3. The interface org.apache.hadoop.hbase.client.Admin is abstract, and can't be instantiated with a Configuration. Constructing an org.apache.hadoop.hbase.client.HBaseAdmin would allow the code to compile, but that constructor is deprecated.
4. I have no references to the field "TABLE_NAME" or "CF_DEFAULT". I'm assuming they are Strings in com.example.hbase.Constants. Perhaps those variables should simply be copied into the the Example?
Link to the documentation section:
http://hbase.apache.org/book.html#_examples
<code>
package com.example.hbase.admin;
import java.io.IOException;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.io.compress.Compression.Algorithm;
import org.apache.hadoop.conf.Configuration;
import static com.example.hbase.Constants.*;
public class CreateSchema {
public static void createOrOverwrite(Admin admin, HTableDescriptor table) throws IOException {
if (admin.tableExists(table.getName())) {
admin.disableTable(table.getName());
admin.deleteTable(table.getName());
}
admin.createTable(table);
}
public static void createSchemaTables (Configuration config) {
try {
final Admin admin = new Admin(config);
HTableDescriptor table = new HTableDescriptor(TableName.valueOf(TABLE_NAME));
table.addFamily(new HColumnDescriptor(CF_DEFAULT).setCompressionType(Algorithm.SNAPPY));
System.out.print("Creating table. ");
createOrOverwrite(admin, table);
System.out.println(" Done.");
admin.close();
} catch (Exception e) {
e.printStackTrace();
System.exit(-1);
}
}
}
</code>
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