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package parallelai.spyglass.hbase;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.io.Serializable;
import java.util.TreeSet;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.mapred.InputSplit;
import parallelai.spyglass.hbase.HBaseConstants.SourceMode;
public class HBaseTableSplitGranular extends HBaseTableSplitBase {
private final Log LOG = LogFactory.getLog(HBaseTableSplitGranular.class);
/** default constructor */
public HBaseTableSplitGranular() {
this(HConstants.EMPTY_BYTE_ARRAY, HConstants.EMPTY_BYTE_ARRAY,
HConstants.EMPTY_BYTE_ARRAY, "", HBaseConstants.SourceMode.EMPTY, false);
}
/**
* Constructor
*
* @param tableName
* @param startRow
* @param endRow
* @param location
*/
public HBaseTableSplitGranular(final byte[] tableName, final byte[] startRow,
final byte[] endRow, final String location,
final HBaseConstants.SourceMode sourceMode, final boolean useSalt) {
this.m_tableName = tableName;
this.m_startRow = startRow;
this.m_endRow = endRow;
this.m_regionLocation = location;
this.m_sourceMode = sourceMode;
this.m_useSalt = useSalt;
}
public HBaseTableSplitGranular(final byte[] tableName,
final TreeSet<String> keyList, int versions, final String location,
final HBaseConstants.SourceMode sourceMode, final boolean useSalt) {
this.m_tableName = tableName;
this.m_keyList = keyList;
this.m_versions = versions;
this.m_sourceMode = sourceMode;
this.m_regionLocation = location;
this.m_useSalt = useSalt;
}
@Override
public long getLength() {
// Not clear how to obtain this... seems to be used only for sorting
// splits
return 0;
}
@Override
public String toString() {
return String
.format(
"Table Name (%s) Region (%s) Source Mode (%s) Start Key (%s) Stop Key (%s) Key List Size (%s) Versions (%s) Use Salt (%s)",
Bytes.toString(m_tableName), m_regionLocation, m_sourceMode,
Bytes.toString(m_startRow), Bytes.toString(m_endRow),
(m_keyList != null) ? m_keyList.size() : "EMPTY", m_versions,
m_useSalt);
}
@Override
public int compareTo(HBaseTableSplitBase o) {
if( ! (o instanceof HBaseTableSplitGranular) ) return -1;
switch (m_sourceMode) {
case SCAN_ALL:
case SCAN_RANGE:
return Bytes.compareTo(getStartRow(), o.getStartRow());
case GET_LIST:
return m_keyList.equals(o.getKeyList()) ? 0 : -1;
case EMPTY:
return 0;
default:
return -1;
}
}
}
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