SampledRowKeysAdapter (Cloud Bigtable HBase Client for Java 1.12.0 API)

com.google.cloud.bigtable.hbase.adapters

Class SampledRowKeysAdapter

• java.lang.Object
• • com.google.cloud.bigtable.hbase.adapters.SampledRowKeysAdapter

• ---

  
  

  public abstract class SampledRowKeysAdapter
  extends Object

  SampledRowKeysAdapter class.

  Version:

  $Id: $Id

  Author:

  sduskis

• • Field Summary

    Fields 

    Modifier and Type	Field and Description
    protected static Logger	LOG Constant LOG
    protected ServerName	serverName
    protected TableName	tableName

  • Constructor Summary

    Constructors 

    Constructor and Description
    SampledRowKeysAdapter(TableName tableName, ServerName serverName) Constructor for SampledRowKeysAdapter.

  • Method Summary

    All Methods Instance Methods Abstract Methods Concrete Methods 

    Modifier and Type	Method and Description
    List<HRegionLocation>	adaptResponse(List<com.google.cloud.bigtable.data.v2.models.KeyOffset> responses) adaptResponse.
    protected abstract HRegionLocation	createRegionLocation(byte[] startKey, byte[] endKey) HBase 1.x and 2.x have non compatible HRegionInfo classes.

    • Methods inherited from class java.lang.Object

      clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

• • Field Detail

    • LOG

      protected static final Logger LOG

      Constant LOG

    • tableName

      protected final TableName tableName

    • serverName

      protected final ServerName serverName

  • Constructor Detail

    • SampledRowKeysAdapter

      public SampledRowKeysAdapter(TableName tableName,
                                   ServerName serverName)

      Constructor for SampledRowKeysAdapter.

      Parameters:

      tableName - a TableName object.

      serverName - a ServerName object.

  • Method Detail

    • adaptResponse

      public List<HRegionLocation> adaptResponse(List<com.google.cloud.bigtable.data.v2.models.KeyOffset> responses)

      adaptResponse.

      Parameters:

      responses - a List object.

      Returns:

      a List object.

    • createRegionLocation

      protected abstract HRegionLocation createRegionLocation(byte[] startKey,
                                                              byte[] endKey)

      HBase 1.x and 2.x have non compatible HRegionInfo classes. HBase 2.x introduces a RegionInfo interface, which makes the two hbase classes with the same name binary incompatible. HRegionLocation uses RegionInfo instead of HRegionInfo, causing confusion and delay. AbstractBigtableConnection.getRegionLocator(TableName) calls an abstract method which subclasses will construct appropriate SampledRowKeysAdapter implementations.

      Parameters:

      startKey - a byte array.

      endKey - a byte array.

      Returns:

      a HRegionLocation object.