HLogKey (Apache HBase 1.2.12 API)

java.lang.Object
- org.apache.hadoop.hbase.wal.WALKey
- - org.apache.hadoop.hbase.regionserver.wal.HLogKey

All Implemented Interfaces:

Comparable<WALKey>, SequenceId, org.apache.hadoop.io.Writable

Direct Known Subclasses:

ReplayHLogKey

Deprecated.
use WALKey
```
@InterfaceAudience.LimitedPrivate(value="Replication")
@Deprecated
public class HLogKey
extends WALKey
implements org.apache.hadoop.io.Writable
```
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.

Nested Class Summary
- Nested classes/interfaces inherited from class org.apache.hadoop.hbase.wal.WALKey
  WALKey.Version

Field Summary

Fields
Modifier and Type Field and Description

private static org.apache.commons.logging.Log LOG
Deprecated.
- Fields inherited from class org.apache.hadoop.hbase.wal.WALKey
  clusterIds, compressionContext, EMPTY_UUIDS, encodedRegionName, logSeqNum, NO_SEQUENCE_ID, tablename, VERSION, writeTime

Fields
Modifier and Type	Field and Description
`private static org.apache.commons.logging.Log`	`LOG` Deprecated.

Constructor Summary

Constructors
Constructor and Description
`HLogKey()` Deprecated.
`HLogKey(byte[] encodedRegionName, TableName tablename)` Deprecated.
`HLogKey(byte[] encodedRegionName, TableName tablename, long now)` Deprecated.
`HLogKey(byte[] encodedRegionName, TableName tablename, long now, List<UUID> clusterIds, long nonceGroup, long nonce, MultiVersionConcurrencyControl mvcc)` Deprecated. Create the log key for writing to somewhere.
`HLogKey(byte[] encodedRegionName, TableName tablename, long logSeqNum, long now, List<UUID> clusterIds, long nonceGroup, long nonce, MultiVersionConcurrencyControl mvcc)` Deprecated. Create the log key for writing to somewhere.
`HLogKey(byte[] encodedRegionName, TableName tablename, long logSeqNum, long nonceGroup, long nonce, MultiVersionConcurrencyControl mvcc)` Deprecated. Create the log key for writing to somewhere.
`HLogKey(byte[] encodedRegionName, TableName tablename, long logSeqNum, long now, UUID clusterId)` Deprecated.
`HLogKey(byte[] encodedRegionName, TableName tablename, long now, MultiVersionConcurrencyControl mvcc)` Deprecated.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`readFields(DataInput in)` Deprecated.
`void`	`write(DataOutput out)` Deprecated. Don't use these Writables methods. Use PB instead.

Methods inherited from class org.apache.hadoop.hbase.wal.WALKey
addClusterId, compareTo, equals, getBuilder, getClusterIds, getEncodedRegionName, getLogSeqNum, getMvcc, getNonce, getNonceGroup, getOriginatingClusterId, getOrigLogSeqNum, getScopes, getSequenceId, getSequenceId, getTablename, getWriteEntry, getWriteTime, hashCode, init, readFieldsFromPb, readOlderScopes, setCompressionContext, setLogSeqNum, setOrigLogSeqNum, setScopes, setWriteEntry, toString, toStringMap

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - LOG
```
private static final org.apache.commons.logging.Log LOG
```
    Deprecated.
- Constructor Detail
  - HLogKey
```
public HLogKey()
```
    Deprecated.
  - HLogKey
```
public HLogKey(byte[] encodedRegionName,
       TableName tablename,
       long logSeqNum,
       long now,
       UUID clusterId)
```
    Deprecated.
  - HLogKey
```
public HLogKey(byte[] encodedRegionName,
       TableName tablename)
```
    Deprecated.
  - HLogKey
```
public HLogKey(byte[] encodedRegionName,
       TableName tablename,
       long now)
```
    Deprecated.
  - HLogKey
```
public HLogKey(byte[] encodedRegionName,
       TableName tablename,
       long now,
       MultiVersionConcurrencyControl mvcc)
```
    Deprecated.
  - HLogKey
```
public HLogKey(byte[] encodedRegionName,
       TableName tablename,
       long logSeqNum,
       long now,
       List<UUID> clusterIds,
       long nonceGroup,
       long nonce,
       MultiVersionConcurrencyControl mvcc)
```
    Deprecated.
    
    Create the log key for writing to somewhere. We maintain the tablename mainly for debugging purposes. A regionName is always a sub-table object.
    Used by log splitting and snapshots.
    
    Parameters:
    encodedRegionName - Encoded name of the region as returned by HRegionInfo#getEncodedNameAsBytes().
    tablename - - name of table
    logSeqNum - - log sequence number
    now - Time at which this edit was written.
    clusterIds - the clusters that have consumed the change(used in Replication)
  - HLogKey
```
public HLogKey(byte[] encodedRegionName,
       TableName tablename,
       long now,
       List<UUID> clusterIds,
       long nonceGroup,
       long nonce,
       MultiVersionConcurrencyControl mvcc)
```
    Deprecated.
    
    Create the log key for writing to somewhere. We maintain the tablename mainly for debugging purposes. A regionName is always a sub-table object.
    
    Parameters:
    encodedRegionName - Encoded name of the region as returned by HRegionInfo#getEncodedNameAsBytes().
    tablename -
    now - Time at which this edit was written.
    clusterIds - the clusters that have consumed the change(used in Replication)
    nonceGroup -
    nonce -
  - HLogKey
```
public HLogKey(byte[] encodedRegionName,
       TableName tablename,
       long logSeqNum,
       long nonceGroup,
       long nonce,
       MultiVersionConcurrencyControl mvcc)
```
    Deprecated.
    
    Create the log key for writing to somewhere. We maintain the tablename mainly for debugging purposes. A regionName is always a sub-table object.
    
    Parameters:
    encodedRegionName - Encoded name of the region as returned by HRegionInfo#getEncodedNameAsBytes().
    tablename -
    logSeqNum -
    nonceGroup -
    nonce -
- Method Detail
  - write
```
@Deprecated
public void write(DataOutput out)
           throws IOException
```
    Deprecated. Don't use these Writables methods. Use PB instead.
    
    Specified by:
    
    write in interface org.apache.hadoop.io.Writable
    
    Throws:
    
    IOException
  - readFields
```
public void readFields(DataInput in)
                throws IOException
```
    Deprecated.
    
    Specified by:
    
    readFields in interface org.apache.hadoop.io.Writable
    
    Throws:
    
    IOException

Class HLogKey

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.wal.WALKey

Field Summary

Fields inherited from class org.apache.hadoop.hbase.wal.WALKey

Constructor Summary

Method Summary

Methods inherited from class org.apache.hadoop.hbase.wal.WALKey

Methods inherited from class java.lang.Object

Field Detail

LOG

Constructor Detail

HLogKey

HLogKey

HLogKey

HLogKey

HLogKey

HLogKey

HLogKey

HLogKey

Method Detail

write

readFields