Hi,
I've setup a little utility to truncate my tables during development but I found that if I truncate a table from the HBase shell it takes 2.5 seconds, from my program it take 30 seconds. The code to truncate is pretty simple. Any ideas on what I've done wrong?

Thanks

-Pete

  private void truncateTables()
    throws IOException
  {
    m_hbaseConnection = new HbaseConnection();
    m_hbaseConnection.setupHBaseConnection();
    final HBaseAdmin hBaseAdmin = m_hbaseConnection.getAdmin();

    int counter = 1;
    for (final String tableName : CLUSTER_TABLES)
    {
      final HTableDescriptor hTableDescriptor = hBaseAdmin.getTableDescriptor(tableName.getBytes());
      m_logger.info("Truncating Table {}.",tableName);
      hBaseAdmin.disableTable(tableName);
      hBaseAdmin.deleteTable(tableName);
      hBaseAdmin.createTable(hTableDescriptor);
      m_logger.info("Truncated Table {}.", tableName);
      m_logger.info("Finished {} of {} Tables.", counter++, CLUSTER_TABLES.length);

    } // - End for each table.

  } // - End truncateTables Method.
  public void setupHBaseConnection()
    throws IOException
  {
    m_hbaseConfiguration = HBaseConfiguration.create();
    m_hbaseConfiguration.clear();

// - Get the m_hbaseConfiguration properties from the Command line -D parameters.
    m_hbaseConfiguration.set("hbase.zookeeper.quorum", System.getProperty("hbase.zookeeper.quorum"));
    m_hbaseConfiguration.set("hbase.zookeeper.property.clientPort", System.getProperty("hbase.zookeeper.property.clientPort"));

    m_logger.info("Using hbase.zookeeper.quorum : {}", m_hbaseConfiguration.get("hbase.zookeeper.quorum"));
    m_logger.info("Using hbase.zookeeper.property.clientPort : {}", m_hbaseConfiguration.get("hbase.zookeeper.property.clientPort"));

  } // - End setupHBaseConnection Method.

Erm well could it be that your script is truncating a bunch of tables
whereas in the shell it only does one? Apart from that I can't think
of anything obvious, the truncate command really does the same thing
as you.

J-D

On Mon, Feb 14, 2011 at 9:43 AM, Peter Haidinyak <[EMAIL PROTECTED]> wrote:
> Hi,
>        I've setup a little utility to truncate my tables during development but I found that if I truncate a table from the HBase shell it takes 2.5 seconds, from my program it take 30 seconds. The code to truncate is pretty simple. Any ideas on what I've done wrong?
>
> Thanks
>
> -Pete
>
>  private void truncateTables()
>    throws IOException
>  {
>    m_hbaseConnection = new HbaseConnection();
>    m_hbaseConnection.setupHBaseConnection();
>    final HBaseAdmin hBaseAdmin = m_hbaseConnection.getAdmin();
>
>    int counter = 1;
>    for (final String tableName : CLUSTER_TABLES)
>    {
>      final HTableDescriptor hTableDescriptor = hBaseAdmin.getTableDescriptor(tableName.getBytes());
>      m_logger.info("Truncating Table {}.",tableName);
>      hBaseAdmin.disableTable(tableName);
>      hBaseAdmin.deleteTable(tableName);
>      hBaseAdmin.createTable(hTableDescriptor);
>      m_logger.info("Truncated Table {}.", tableName);
>      m_logger.info("Finished {} of {} Tables.", counter++, CLUSTER_TABLES.length);
>
>    } // - End for each table.
>
>  } // - End truncateTables Method.
>
>
>  public void setupHBaseConnection()
>    throws IOException
>  {
>    m_hbaseConfiguration = HBaseConfiguration.create();
>    m_hbaseConfiguration.clear();
>
> // - Get the m_hbaseConfiguration properties from the Command line -D parameters.
>    m_hbaseConfiguration.set("hbase.zookeeper.quorum", System.getProperty("hbase.zookeeper.quorum"));
>    m_hbaseConfiguration.set("hbase.zookeeper.property.clientPort", System.getProperty("hbase.zookeeper.property.clientPort"));
>
>    m_logger.info("Using hbase.zookeeper.quorum : {}", m_hbaseConfiguration.get("hbase.zookeeper.quorum"));
>    m_logger.info("Using hbase.zookeeper.property.clientPort : {}", m_hbaseConfiguration.get("hbase.zookeeper.property.clientPort"));
>
>  } // - End setupHBaseConnection Method.
>
>

Each table is taking 30 seconds. Without looking at the HBase code I assumed it was doing the same process as I am. Just quicker.

Thanks

-Pete

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Jean-Daniel Cryans
Sent: Monday, February 14, 2011 10:12 AM
To: [EMAIL PROTECTED]
Subject: Re: Truncate tables

Erm well could it be that your script is truncating a bunch of tables
whereas in the shell it only does one? Apart from that I can't think
of anything obvious, the truncate command really does the same thing
as you.

J-D

On Mon, Feb 14, 2011 at 9:43 AM, Peter Haidinyak <[EMAIL PROTECTED]> wrote:
> Hi,
>        I've setup a little utility to truncate my tables during development but I found that if I truncate a table from the HBase shell it takes 2.5 seconds, from my program it take 30 seconds. The code to truncate is pretty simple. Any ideas on what I've done wrong?
>
> Thanks
>
> -Pete
>
>  private void truncateTables()
>    throws IOException
>  {
>    m_hbaseConnection = new HbaseConnection();
>    m_hbaseConnection.setupHBaseConnection();
>    final HBaseAdmin hBaseAdmin = m_hbaseConnection.getAdmin();
>
>    int counter = 1;
>    for (final String tableName : CLUSTER_TABLES)
>    {
>      final HTableDescriptor hTableDescriptor = hBaseAdmin.getTableDescriptor(tableName.getBytes());
>      m_logger.info("Truncating Table {}.",tableName);
>      hBaseAdmin.disableTable(tableName);
>      hBaseAdmin.deleteTable(tableName);
>      hBaseAdmin.createTable(hTableDescriptor);
>      m_logger.info("Truncated Table {}.", tableName);
>      m_logger.info("Finished {} of {} Tables.", counter++, CLUSTER_TABLES.length);
>
>    } // - End for each table.
>
>  } // - End truncateTables Method.
>
>
>  public void setupHBaseConnection()
>    throws IOException
>  {
>    m_hbaseConfiguration = HBaseConfiguration.create();
>    m_hbaseConfiguration.clear();
>
> // - Get the m_hbaseConfiguration properties from the Command line -D parameters.
>    m_hbaseConfiguration.set("hbase.zookeeper.quorum", System.getProperty("hbase.zookeeper.quorum"));
>    m_hbaseConfiguration.set("hbase.zookeeper.property.clientPort", System.getProperty("hbase.zookeeper.property.clientPort"));
>
>    m_logger.info("Using hbase.zookeeper.quorum : {}", m_hbaseConfiguration.get("hbase.zookeeper.quorum"));
>    m_logger.info("Using hbase.zookeeper.property.clientPort : {}", m_hbaseConfiguration.get("hbase.zookeeper.property.clientPort"));
>
>  } // - End setupHBaseConnection Method.
>
>

Can you enable DEBUG for HBase, run your code, and post the output in
a pastebin?

J-D

On Mon, Feb 14, 2011 at 10:14 AM, Peter Haidinyak <[EMAIL PROTECTED]> wrote:
> Each table is taking 30 seconds. Without looking at the HBase code I assumed it was doing the same process as I am. Just quicker.
>
> Thanks
>
> -Pete
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Jean-Daniel Cryans
> Sent: Monday, February 14, 2011 10:12 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Truncate tables
>
> Erm well could it be that your script is truncating a bunch of tables
> whereas in the shell it only does one? Apart from that I can't think
> of anything obvious, the truncate command really does the same thing
> as you.
>
> J-D
>
> On Mon, Feb 14, 2011 at 9:43 AM, Peter Haidinyak <[EMAIL PROTECTED]> wrote:
>> Hi,
>>        I've setup a little utility to truncate my tables during development but I found that if I truncate a table from the HBase shell it takes 2.5 seconds, from my program it take 30 seconds. The code to truncate is pretty simple. Any ideas on what I've done wrong?
>>
>> Thanks
>>
>> -Pete
>>
>>  private void truncateTables()
>>    throws IOException
>>  {
>>    m_hbaseConnection = new HbaseConnection();
>>    m_hbaseConnection.setupHBaseConnection();
>>    final HBaseAdmin hBaseAdmin = m_hbaseConnection.getAdmin();
>>
>>    int counter = 1;
>>    for (final String tableName : CLUSTER_TABLES)
>>    {
>>      final HTableDescriptor hTableDescriptor = hBaseAdmin.getTableDescriptor(tableName.getBytes());
>>      m_logger.info("Truncating Table {}.",tableName);
>>      hBaseAdmin.disableTable(tableName);
>>      hBaseAdmin.deleteTable(tableName);
>>      hBaseAdmin.createTable(hTableDescriptor);
>>      m_logger.info("Truncated Table {}.", tableName);
>>      m_logger.info("Finished {} of {} Tables.", counter++, CLUSTER_TABLES.length);
>>
>>    } // - End for each table.
>>
>>  } // - End truncateTables Method.
>>
>>
>>  public void setupHBaseConnection()
>>    throws IOException
>>  {
>>    m_hbaseConfiguration = HBaseConfiguration.create();
>>    m_hbaseConfiguration.clear();
>>
>> // - Get the m_hbaseConfiguration properties from the Command line -D parameters.
>>    m_hbaseConfiguration.set("hbase.zookeeper.quorum", System.getProperty("hbase.zookeeper.quorum"));
>>    m_hbaseConfiguration.set("hbase.zookeeper.property.clientPort", System.getProperty("hbase.zookeeper.property.clientPort"));
>>
>>    m_logger.info("Using hbase.zookeeper.quorum : {}", m_hbaseConfiguration.get("hbase.zookeeper.quorum"));
>>    m_logger.info("Using hbase.zookeeper.property.clientPort : {}", m_hbaseConfiguration.get("hbase.zookeeper.property.clientPort"));
>>
>>  } // - End setupHBaseConnection Method.
>>
>>
>

I'll try that when I get home tonight. What's a 'pastebin'?

Thanks

-Pete

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Jean-Daniel Cryans
Sent: Monday, February 14, 2011 10:20 AM
To: [EMAIL PROTECTED]
Subject: Re: Truncate tables

Can you enable DEBUG for HBase, run your code, and post the output in
a pastebin?

J-D

On Mon, Feb 14, 2011 at 10:14 AM, Peter Haidinyak <[EMAIL PROTECTED]> wrote:
> Each table is taking 30 seconds. Without looking at the HBase code I assumed it was doing the same process as I am. Just quicker.
>
> Thanks
>
> -Pete
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Jean-Daniel Cryans
> Sent: Monday, February 14, 2011 10:12 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Truncate tables
>
> Erm well could it be that your script is truncating a bunch of tables
> whereas in the shell it only does one? Apart from that I can't think
> of anything obvious, the truncate command really does the same thing
> as you.
>
> J-D
>
> On Mon, Feb 14, 2011 at 9:43 AM, Peter Haidinyak <[EMAIL PROTECTED]> wrote:
>> Hi,
>>        I've setup a little utility to truncate my tables during development but I found that if I truncate a table from the HBase shell it takes 2.5 seconds, from my program it take 30 seconds. The code to truncate is pretty simple. Any ideas on what I've done wrong?
>>
>> Thanks
>>
>> -Pete
>>
>>  private void truncateTables()
>>    throws IOException
>>  {
>>    m_hbaseConnection = new HbaseConnection();
>>    m_hbaseConnection.setupHBaseConnection();
>>    final HBaseAdmin hBaseAdmin = m_hbaseConnection.getAdmin();
>>
>>    int counter = 1;
>>    for (final String tableName : CLUSTER_TABLES)
>>    {
>>      final HTableDescriptor hTableDescriptor = hBaseAdmin.getTableDescriptor(tableName.getBytes());
>>      m_logger.info("Truncating Table {}.",tableName);
>>      hBaseAdmin.disableTable(tableName);
>>      hBaseAdmin.deleteTable(tableName);
>>      hBaseAdmin.createTable(hTableDescriptor);
>>      m_logger.info("Truncated Table {}.", tableName);
>>      m_logger.info("Finished {} of {} Tables.", counter++, CLUSTER_TABLES.length);
>>
>>    } // - End for each table.
>>
>>  } // - End truncateTables Method.
>>
>>
>>  public void setupHBaseConnection()
>>    throws IOException
>>  {
>>    m_hbaseConfiguration = HBaseConfiguration.create();
>>    m_hbaseConfiguration.clear();
>>
>> // - Get the m_hbaseConfiguration properties from the Command line -D parameters.
>>    m_hbaseConfiguration.set("hbase.zookeeper.quorum", System.getProperty("hbase.zookeeper.quorum"));
>>    m_hbaseConfiguration.set("hbase.zookeeper.property.clientPort", System.getProperty("hbase.zookeeper.property.clientPort"));
>>
>>    m_logger.info("Using hbase.zookeeper.quorum : {}", m_hbaseConfiguration.get("hbase.zookeeper.quorum"));
>>    m_logger.info("Using hbase.zookeeper.property.clientPort : {}", m_hbaseConfiguration.get("hbase.zookeeper.property.clientPort"));
>>
>>  } // - End setupHBaseConnection Method.
>>
>>
>

pastebin.com

On Mon, Feb 14, 2011 at 10:44 AM, Peter Haidinyak <[EMAIL PROTECTED]> wrote:
> I'll try that when I get home tonight. What's a 'pastebin'?
>
> Thanks
>
> -Pete
>

It is strage thing in hbase. Operations like create or drop are asyncronous,
so immidiately after first rpc 'disable'
hbase client try to check succesfull execution. Often it is not really
complete yet, so hbase client pauses an
amount of time configured in 'hbase.client.pause'. If you change it in you
Configuration before connect to hbase to,
for example 1000 you will super fast drop/disable/create cycle. But bevare,
you should increment amount of tries,
configured with 'hbase.client.retries.number', or you can fail, if real
disable takes longer then 10 seconds (10 tryes by 1 second each).

2011/2/14 Peter Haidinyak <[EMAIL PROTECTED]>

> Each table is taking 30 seconds. Without looking at the HBase code I
> assumed it was doing the same process as I am. Just quicker.
>
> Thanks
>
> -Pete
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
> Jean-Daniel Cryans
> Sent: Monday, February 14, 2011 10:12 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Truncate tables
>
> Erm well could it be that your script is truncating a bunch of tables
> whereas in the shell it only does one? Apart from that I can't think
> of anything obvious, the truncate command really does the same thing
> as you.
>
> J-D
>
> On Mon, Feb 14, 2011 at 9:43 AM, Peter Haidinyak <[EMAIL PROTECTED]>
> wrote:
> > Hi,
> >        I've setup a little utility to truncate my tables during
> development but I found that if I truncate a table from the HBase shell it
> takes 2.5 seconds, from my program it take 30 seconds. The code to truncate
> is pretty simple. Any ideas on what I've done wrong?
> >
> > Thanks
> >
> > -Pete
> >
> >  private void truncateTables()
> >    throws IOException
> >  {
> >    m_hbaseConnection = new HbaseConnection();
> >    m_hbaseConnection.setupHBaseConnection();
> >    final HBaseAdmin hBaseAdmin = m_hbaseConnection.getAdmin();
> >
> >    int counter = 1;
> >    for (final String tableName : CLUSTER_TABLES)
> >    {
> >      final HTableDescriptor hTableDescriptor > hBaseAdmin.getTableDescriptor(tableName.getBytes());
> >      m_logger.info("Truncating Table {}.",tableName);
> >      hBaseAdmin.disableTable(tableName);
> >      hBaseAdmin.deleteTable(tableName);
> >      hBaseAdmin.createTable(hTableDescriptor);
> >      m_logger.info("Truncated Table {}.", tableName);
> >      m_logger.info("Finished {} of {} Tables.", counter++,
> CLUSTER_TABLES.length);
> >
> >    } // - End for each table.
> >
> >  } // - End truncateTables Method.
> >
> >
> >  public void setupHBaseConnection()
> >    throws IOException
> >  {
> >    m_hbaseConfiguration = HBaseConfiguration.create();
> >    m_hbaseConfiguration.clear();
> >
> > // - Get the m_hbaseConfiguration properties from the Command line -D
> parameters.
> >    m_hbaseConfiguration.set("hbase.zookeeper.quorum",
> System.getProperty("hbase.zookeeper.quorum"));
> >    m_hbaseConfiguration.set("hbase.zookeeper.property.clientPort",
> System.getProperty("hbase.zookeeper.property.clientPort"));
> >
> >    m_logger.info("Using hbase.zookeeper.quorum : {}",
> m_hbaseConfiguration.get("hbase.zookeeper.quorum"));
> >    m_logger.info("Using hbase.zookeeper.property.clientPort : {}",
> m_hbaseConfiguration.get("hbase.zookeeper.property.clientPort"));
> >
> >  } // - End setupHBaseConnection Method.
> >
> >
>

What Andrey describes is how the shell makes itself more prompt
responding to changes.

See src/main/ruby/hbase/hbase.rb

        # Turn off retries in hbase and ipc.  Human doesn't want to
wait on N   retries.
        configuration.setInt("hbase.client.retries.number", 7)
        configuration.setInt("ipc.client.connect.max.retries", 3)

St.Ack
On Tue, Feb 15, 2011 at 3:36 AM, Andrey Stepachev <[EMAIL PROTECTED]> wrote:
> It is strage thing in hbase. Operations like create or drop are asyncronous,
> so immidiately after first rpc 'disable'
> hbase client try to check succesfull execution. Often it is not really
> complete yet, so hbase client pauses an
> amount of time configured in 'hbase.client.pause'. If you change it in you
> Configuration before connect to hbase to,
> for example 1000 you will super fast drop/disable/create cycle. But bevare,
> you should increment amount of tries,
> configured with 'hbase.client.retries.number', or you can fail, if real
> disable takes longer then 10 seconds (10 tryes by 1 second each).
>
> 2011/2/14 Peter Haidinyak <[EMAIL PROTECTED]>
>
>> Each table is taking 30 seconds. Without looking at the HBase code I
>> assumed it was doing the same process as I am. Just quicker.
>>
>> Thanks
>>
>> -Pete
>>
>> -----Original Message-----
>> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
>> Jean-Daniel Cryans
>> Sent: Monday, February 14, 2011 10:12 AM
>> To: [EMAIL PROTECTED]
>> Subject: Re: Truncate tables
>>
>> Erm well could it be that your script is truncating a bunch of tables
>> whereas in the shell it only does one? Apart from that I can't think
>> of anything obvious, the truncate command really does the same thing
>> as you.
>>
>> J-D
>>
>> On Mon, Feb 14, 2011 at 9:43 AM, Peter Haidinyak <[EMAIL PROTECTED]>
>> wrote:
>> > Hi,
>> >        I've setup a little utility to truncate my tables during
>> development but I found that if I truncate a table from the HBase shell it
>> takes 2.5 seconds, from my program it take 30 seconds. The code to truncate
>> is pretty simple. Any ideas on what I've done wrong?
>> >
>> > Thanks
>> >
>> > -Pete
>> >
>> >  private void truncateTables()
>> >    throws IOException
>> >  {
>> >    m_hbaseConnection = new HbaseConnection();
>> >    m_hbaseConnection.setupHBaseConnection();
>> >    final HBaseAdmin hBaseAdmin = m_hbaseConnection.getAdmin();
>> >
>> >    int counter = 1;
>> >    for (final String tableName : CLUSTER_TABLES)
>> >    {
>> >      final HTableDescriptor hTableDescriptor >> hBaseAdmin.getTableDescriptor(tableName.getBytes());
>> >      m_logger.info("Truncating Table {}.",tableName);
>> >      hBaseAdmin.disableTable(tableName);
>> >      hBaseAdmin.deleteTable(tableName);
>> >      hBaseAdmin.createTable(hTableDescriptor);
>> >      m_logger.info("Truncated Table {}.", tableName);
>> >      m_logger.info("Finished {} of {} Tables.", counter++,
>> CLUSTER_TABLES.length);
>> >
>> >    } // - End for each table.
>> >
>> >  } // - End truncateTables Method.
>> >
>> >
>> >  public void setupHBaseConnection()
>> >    throws IOException
>> >  {
>> >    m_hbaseConfiguration = HBaseConfiguration.create();
>> >    m_hbaseConfiguration.clear();
>> >
>> > // - Get the m_hbaseConfiguration properties from the Command line -D
>> parameters.
>> >    m_hbaseConfiguration.set("hbase.zookeeper.quorum",
>> System.getProperty("hbase.zookeeper.quorum"));
>> >    m_hbaseConfiguration.set("hbase.zookeeper.property.clientPort",
>> System.getProperty("hbase.zookeeper.property.clientPort"));
>> >
>> >    m_logger.info("Using hbase.zookeeper.quorum : {}",
>> m_hbaseConfiguration.get("hbase.zookeeper.quorum"));
>> >    m_logger.info("Using hbase.zookeeper.property.clientPort : {}",
>> m_hbaseConfiguration.get("hbase.zookeeper.property.clientPort"));
>> >
>> >  } // - End setupHBaseConnection Method.
>> >
>> >
>>
>

Thanks, I added the new parameters and my client now runs as fast as the shell. This makes it easier to debug import routines.

-Pete

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Stack
Sent: Tuesday, February 15, 2011 7:10 AM
To: [EMAIL PROTECTED]
Subject: Re: Truncate tables

What Andrey describes is how the shell makes itself more prompt
responding to changes.

See src/main/ruby/hbase/hbase.rb

        # Turn off retries in hbase and ipc.  Human doesn't want to
wait on N   retries.
        configuration.setInt("hbase.client.retries.number", 7)
        configuration.setInt("ipc.client.connect.max.retries", 3)

St.Ack
On Tue, Feb 15, 2011 at 3:36 AM, Andrey Stepachev <[EMAIL PROTECTED]> wrote:
> It is strage thing in hbase. Operations like create or drop are asyncronous,
> so immidiately after first rpc 'disable'
> hbase client try to check succesfull execution. Often it is not really
> complete yet, so hbase client pauses an
> amount of time configured in 'hbase.client.pause'. If you change it in you
> Configuration before connect to hbase to,
> for example 1000 you will super fast drop/disable/create cycle. But bevare,
> you should increment amount of tries,
> configured with 'hbase.client.retries.number', or you can fail, if real
> disable takes longer then 10 seconds (10 tryes by 1 second each).
>
> 2011/2/14 Peter Haidinyak <[EMAIL PROTECTED]>
>
>> Each table is taking 30 seconds. Without looking at the HBase code I
>> assumed it was doing the same process as I am. Just quicker.
>>
>> Thanks
>>
>> -Pete
>>
>> -----Original Message-----
>> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
>> Jean-Daniel Cryans
>> Sent: Monday, February 14, 2011 10:12 AM
>> To: [EMAIL PROTECTED]
>> Subject: Re: Truncate tables
>>
>> Erm well could it be that your script is truncating a bunch of tables
>> whereas in the shell it only does one? Apart from that I can't think
>> of anything obvious, the truncate command really does the same thing
>> as you.
>>
>> J-D
>>
>> On Mon, Feb 14, 2011 at 9:43 AM, Peter Haidinyak <[EMAIL PROTECTED]>
>> wrote:
>> > Hi,
>> >        I've setup a little utility to truncate my tables during
>> development but I found that if I truncate a table from the HBase shell it
>> takes 2.5 seconds, from my program it take 30 seconds. The code to truncate
>> is pretty simple. Any ideas on what I've done wrong?
>> >
>> > Thanks
>> >
>> > -Pete
>> >
>> >  private void truncateTables()
>> >    throws IOException
>> >  {
>> >    m_hbaseConnection = new HbaseConnection();
>> >    m_hbaseConnection.setupHBaseConnection();
>> >    final HBaseAdmin hBaseAdmin = m_hbaseConnection.getAdmin();
>> >
>> >    int counter = 1;
>> >    for (final String tableName : CLUSTER_TABLES)
>> >    {
>> >      final HTableDescriptor hTableDescriptor >> hBaseAdmin.getTableDescriptor(tableName.getBytes());
>> >      m_logger.info("Truncating Table {}.",tableName);
>> >      hBaseAdmin.disableTable(tableName);
>> >      hBaseAdmin.deleteTable(tableName);
>> >      hBaseAdmin.createTable(hTableDescriptor);
>> >      m_logger.info("Truncated Table {}.", tableName);
>> >      m_logger.info("Finished {} of {} Tables.", counter++,
>> CLUSTER_TABLES.length);
>> >
>> >    } // - End for each table.
>> >
>> >  } // - End truncateTables Method.
>> >
>> >
>> >  public void setupHBaseConnection()
>> >    throws IOException
>> >  {
>> >    m_hbaseConfiguration = HBaseConfiguration.create();
>> >    m_hbaseConfiguration.clear();
>> >
>> > // - Get the m_hbaseConfiguration properties from the Command line -D
>> parameters.
>> >    m_hbaseConfiguration.set("hbase.zookeeper.quorum",
>> System.getProperty("hbase.zookeeper.quorum"));
>> >    m_hbaseConfiguration.set("hbase.zookeeper.property.clientPort",
>> System.getProperty("hbase.zookeeper.property.clientPort"));
>> >
>> >    m_logger.info("Using hbase.zookeeper.quorum : {}",
>> m_hbaseConfiguration.get("hbase.zookeeper.quorum"));