ConnectionConfiguration (Apache HBase 1.2.12 API)

java.lang.Object
- org.apache.hadoop.hbase.client.ConnectionConfiguration

```
@InterfaceAudience.Private
public class ConnectionConfiguration
extends Object
```
Configuration parameters for the connection. Configuration is a heavy weight registry that does a lot of string operations and regex matching. Method calls into Configuration account for high CPU usage and have huge performance impact. This class caches connection-related configuration values in the ConnectionConfiguration object so that expensive conf.getXXX() calls are avoided every time HTable, etc is instantiated. see HBASE-12128

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`MAX_KEYVALUE_SIZE_DEFAULT`
`static String`	`MAX_KEYVALUE_SIZE_KEY`
`private int`	`maxKeyValueSize`
`private int`	`metaOperationTimeout`
`private int`	`operationTimeout`
`private int`	`primaryCallTimeoutMicroSecond`
`private int`	`replicaCallTimeoutMicroSecondScan`
`private int`	`retries`
`private int`	`scannerCaching`
`private long`	`scannerMaxResultSize`
`static long`	`WRITE_BUFFER_SIZE_DEFAULT`
`static String`	`WRITE_BUFFER_SIZE_KEY`
`private long`	`writeBufferSize`

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`ConnectionConfiguration()` Constructor This is for internal testing purpose (using the default value).
`(package private)`	`ConnectionConfiguration(org.apache.hadoop.conf.Configuration conf)` Constructor

Method Summary

Methods
Modifier and Type	Method and Description
`int`	`getMaxKeyValueSize()`
`int`	`getMetaOperationTimeout()`
`int`	`getOperationTimeout()`
`int`	`getPrimaryCallTimeoutMicroSecond()`
`int`	`getReplicaCallTimeoutMicroSecondScan()`
`int`	`getRetriesNumber()`
`int`	`getScannerCaching()`
`long`	`getScannerMaxResultSize()`
`long`	`getWriteBufferSize()`

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

Field Detail

WRITE_BUFFER_SIZE_KEY

public static final String WRITE_BUFFER_SIZE_KEY

See Also:: Constant Field Values

WRITE_BUFFER_SIZE_DEFAULT
```
public static final long WRITE_BUFFER_SIZE_DEFAULT
```
See Also:
Constant Field Values

MAX_KEYVALUE_SIZE_KEY

public static final String MAX_KEYVALUE_SIZE_KEY

See Also:: Constant Field Values

MAX_KEYVALUE_SIZE_DEFAULT
```
public static final int MAX_KEYVALUE_SIZE_DEFAULT
```
See Also:
Constant Field Values

writeBufferSize
```
private final long writeBufferSize
```

metaOperationTimeout
```
private final int metaOperationTimeout
```

operationTimeout
```
private final int operationTimeout
```

scannerCaching
```
private final int scannerCaching
```

scannerMaxResultSize

private final long scannerMaxResultSize

primaryCallTimeoutMicroSecond

private final int primaryCallTimeoutMicroSecond

replicaCallTimeoutMicroSecondScan

private final int replicaCallTimeoutMicroSecondScan

retries
```
private final int retries
```

maxKeyValueSize
```
private final int maxKeyValueSize
```

Constructor Detail
- ConnectionConfiguration
```
ConnectionConfiguration(org.apache.hadoop.conf.Configuration conf)
```
  Constructor
  
  Parameters:
  conf - Configuration object
- ConnectionConfiguration
```
protected ConnectionConfiguration()
```
  Constructor This is for internal testing purpose (using the default value). In real usage, we should read the configuration from the Configuration object.

Method Detail

getWriteBufferSize
```
public long getWriteBufferSize()
```

getMetaOperationTimeout
```
public int getMetaOperationTimeout()
```

getOperationTimeout
```
public int getOperationTimeout()
```

getScannerCaching
```
public int getScannerCaching()
```

getPrimaryCallTimeoutMicroSecond

public int getPrimaryCallTimeoutMicroSecond()

getReplicaCallTimeoutMicroSecondScan

public int getReplicaCallTimeoutMicroSecondScan()

getRetriesNumber
```
public int getRetriesNumber()
```

getMaxKeyValueSize
```
public int getMaxKeyValueSize()
```

getScannerMaxResultSize
```
public long getScannerMaxResultSize()
```

Class ConnectionConfiguration

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

WRITE_BUFFER_SIZE_KEY

WRITE_BUFFER_SIZE_DEFAULT

MAX_KEYVALUE_SIZE_KEY

MAX_KEYVALUE_SIZE_DEFAULT

writeBufferSize

metaOperationTimeout

operationTimeout

scannerCaching

scannerMaxResultSize

primaryCallTimeoutMicroSecond

replicaCallTimeoutMicroSecondScan

retries

maxKeyValueSize

Constructor Detail

ConnectionConfiguration

ConnectionConfiguration

Method Detail

getWriteBufferSize

getMetaOperationTimeout

getOperationTimeout

getScannerCaching

getPrimaryCallTimeoutMicroSecond

getReplicaCallTimeoutMicroSecondScan

getRetriesNumber

getMaxKeyValueSize

getScannerMaxResultSize