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java.lang.Objectorg.apache.hadoop.hbase.regionserver.wal.HLogKey
public class HLogKey
A Key for an entry in the change log. The log intermingles edits to many tables and rows, so each log entry identifies the appropriate table and row. Within a table and row, they're also sorted.
Some Transactional edits (START, COMMIT, ABORT) will not have an associated row.
Constructor Summary | |
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HLogKey()
Writable Consructor -- Do not use. |
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HLogKey(byte[] encodedRegionName,
byte[] tablename,
long logSeqNum,
long now)
Create the log key! We maintain the tablename mainly for debugging purposes. |
Method Summary | |
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int |
compareTo(HLogKey o)
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boolean |
equals(Object obj)
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byte |
getClusterId()
Get the id of the original cluster |
byte[] |
getEncodedRegionName()
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long |
getLogSeqNum()
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byte[] |
getTablename()
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long |
getWriteTime()
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int |
hashCode()
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void |
readFields(DataInput in)
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void |
setClusterId(byte clusterId)
Set the cluster id of this key |
String |
toString()
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Map<String,Object> |
toStringMap()
Produces a string map for this key. |
void |
write(DataOutput out)
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Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public HLogKey()
public HLogKey(byte[] encodedRegionName, byte[] tablename, long logSeqNum, long now)
encodedRegionName
- Encoded name of the region as returned by
HRegionInfo#getEncodedNameAsBytes()
.tablename
- - name of tablelogSeqNum
- - log sequence numbernow
- Time at which this edit was written.Method Detail |
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public byte[] getEncodedRegionName()
public byte[] getTablename()
public long getLogSeqNum()
public long getWriteTime()
public byte getClusterId()
public void setClusterId(byte clusterId)
clusterId
- public String toString()
toString
in class Object
public Map<String,Object> toStringMap()
public boolean equals(Object obj)
equals
in class Object
public int hashCode()
hashCode
in class Object
public int compareTo(HLogKey o)
compareTo
in interface Comparable<HLogKey>
public void write(DataOutput out) throws IOException
write
in interface org.apache.hadoop.io.Writable
IOException
public void readFields(DataInput in) throws IOException
readFields
in interface org.apache.hadoop.io.Writable
IOException
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