MobConstants (Apache HBase 2.1.0-cdh6.3.2 API)

java.lang.Object
- org.apache.hadoop.hbase.mob.MobConstants

@InterfaceAudience.Public
public final class MobConstants
extends Object

The constants used in mob.

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`BULKLOAD_DIR_NAME`
`static float`	`DEFAULT_EVICT_REMAIN_RATIO`
`static long`	`DEFAULT_MOB_CACHE_EVICT_PERIOD`
`static int`	`DEFAULT_MOB_CLEANER_PERIOD`
`static int`	`DEFAULT_MOB_COMPACTION_BATCH_SIZE`
`static int`	`DEFAULT_MOB_COMPACTION_CHORE_PERIOD`
`static long`	`DEFAULT_MOB_COMPACTION_MERGEABLE_THRESHOLD`
`static int`	`DEFAULT_MOB_COMPACTION_THREADS_MAX`
`static int`	`DEFAULT_MOB_DELFILE_MAX_COUNT`
`static int`	`DEFAULT_MOB_FILE_CACHE_SIZE`
`static String`	`EMPTY_STRING`
`static String`	`EMPTY_VALUE_ON_MOBCELL_MISS`
`static String`	`MOB_CACHE_BLOCKS`
`static String`	`MOB_CACHE_EVICT_PERIOD`
`static String`	`MOB_CACHE_EVICT_REMAIN_RATIO`
`static String`	`MOB_CLEANER_PERIOD`
`static String`	`MOB_COMPACTION_BATCH_SIZE` The max number of the mob files that is allowed in a batch of the mob compaction.
`static String`	`MOB_COMPACTION_CHORE_PERIOD` The period that MobCompactionChore runs.
`static String`	`MOB_COMPACTION_MERGEABLE_THRESHOLD` If the size of a mob file is less than this value, it's regarded as a small file and needs to be merged in mob compaction.
`static String`	`MOB_COMPACTION_THREADS_MAX` The max number of threads used in MobCompactor.
`static String`	`MOB_COMPACTOR_CLASS_KEY`
`static String`	`MOB_DELFILE_MAX_COUNT` The max number of del files that is allowed in the mob file compaction.
`static String`	`MOB_DIR_NAME`
`static String`	`MOB_FILE_CACHE_SIZE_KEY`
`static Tag`	`MOB_REF_TAG`
`static String`	`MOB_REGION_NAME`
`static byte[]`	`MOB_REGION_NAME_BYTES`
`static String`	`MOB_SCAN_RAW`
`static String`	`MOB_SCAN_REF_ONLY`
`static byte[]`	`MOB_TABLE_LOCK_SUFFIX`
`static String`	`TEMP_DIR_NAME`

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

- Field Detail
  - MOB_SCAN_RAW
```
public static final String MOB_SCAN_RAW
```
    See Also:
    
    Constant Field Values
  - MOB_CACHE_BLOCKS
```
public static final String MOB_CACHE_BLOCKS
```
    See Also:
    
    Constant Field Values
  - MOB_SCAN_REF_ONLY
```
public static final String MOB_SCAN_REF_ONLY
```
    See Also:
    
    Constant Field Values
  - EMPTY_VALUE_ON_MOBCELL_MISS
```
public static final String EMPTY_VALUE_ON_MOBCELL_MISS
```
    See Also:
    
    Constant Field Values
  - MOB_FILE_CACHE_SIZE_KEY
```
public static final String MOB_FILE_CACHE_SIZE_KEY
```
    See Also:
    
    Constant Field Values
  - DEFAULT_MOB_FILE_CACHE_SIZE
```
public static final int DEFAULT_MOB_FILE_CACHE_SIZE
```
    See Also:
    
    Constant Field Values
  - MOB_DIR_NAME
```
public static final String MOB_DIR_NAME
```
    See Also:
    
    Constant Field Values
  - MOB_REGION_NAME
```
public static final String MOB_REGION_NAME
```
    See Also:
    
    Constant Field Values
  - MOB_REGION_NAME_BYTES
```
public static final byte[] MOB_REGION_NAME_BYTES
```
  - MOB_CLEANER_PERIOD
```
public static final String MOB_CLEANER_PERIOD
```
    See Also:
    
    Constant Field Values
  - DEFAULT_MOB_CLEANER_PERIOD
```
public static final int DEFAULT_MOB_CLEANER_PERIOD
```
    See Also:
    
    Constant Field Values
  - MOB_CACHE_EVICT_PERIOD
```
public static final String MOB_CACHE_EVICT_PERIOD
```
    See Also:
    
    Constant Field Values
  - MOB_CACHE_EVICT_REMAIN_RATIO
```
public static final String MOB_CACHE_EVICT_REMAIN_RATIO
```
    See Also:
    
    Constant Field Values
  - MOB_REF_TAG
```
public static final Tag MOB_REF_TAG
```
  - DEFAULT_EVICT_REMAIN_RATIO
```
public static final float DEFAULT_EVICT_REMAIN_RATIO
```
    See Also:
    
    Constant Field Values
  - DEFAULT_MOB_CACHE_EVICT_PERIOD
```
public static final long DEFAULT_MOB_CACHE_EVICT_PERIOD
```
    See Also:
    
    Constant Field Values
  - TEMP_DIR_NAME
```
public static final String TEMP_DIR_NAME
```
    See Also:
    
    Constant Field Values
  - BULKLOAD_DIR_NAME
```
public static final String BULKLOAD_DIR_NAME
```
    See Also:
    
    Constant Field Values
  - MOB_TABLE_LOCK_SUFFIX
```
public static final byte[] MOB_TABLE_LOCK_SUFFIX
```
  - EMPTY_STRING
```
public static final String EMPTY_STRING
```
    See Also:
    
    Constant Field Values
  - MOB_COMPACTION_MERGEABLE_THRESHOLD
```
public static final String MOB_COMPACTION_MERGEABLE_THRESHOLD
```
    If the size of a mob file is less than this value, it's regarded as a small file and needs to be merged in mob compaction. The default value is 1280MB.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_MOB_COMPACTION_MERGEABLE_THRESHOLD
```
public static final long DEFAULT_MOB_COMPACTION_MERGEABLE_THRESHOLD
```
    See Also:
    
    Constant Field Values
  - MOB_DELFILE_MAX_COUNT
```
public static final String MOB_DELFILE_MAX_COUNT
```
    The max number of del files that is allowed in the mob file compaction. In the mob compaction, when the number of existing del files is larger than this value, they are merged until number of del files is not larger this value. The default value is 3.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_MOB_DELFILE_MAX_COUNT
```
public static final int DEFAULT_MOB_DELFILE_MAX_COUNT
```
    See Also:
    
    Constant Field Values
  - MOB_COMPACTION_BATCH_SIZE
```
public static final String MOB_COMPACTION_BATCH_SIZE
```
    The max number of the mob files that is allowed in a batch of the mob compaction. The mob compaction merges the small mob files to bigger ones. If the number of the small files is very large, it could lead to a "too many opened file handlers" in the merge. And the merge has to be split into batches. This value limits the number of mob files that are selected in a batch of the mob compaction. The default value is 100.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_MOB_COMPACTION_BATCH_SIZE
```
public static final int DEFAULT_MOB_COMPACTION_BATCH_SIZE
```
    See Also:
    
    Constant Field Values
  - MOB_COMPACTION_CHORE_PERIOD
```
public static final String MOB_COMPACTION_CHORE_PERIOD
```
    The period that MobCompactionChore runs. The unit is second. The default value is one week.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_MOB_COMPACTION_CHORE_PERIOD
```
public static final int DEFAULT_MOB_COMPACTION_CHORE_PERIOD
```
    See Also:
    
    Constant Field Values
  - MOB_COMPACTOR_CLASS_KEY
```
public static final String MOB_COMPACTOR_CLASS_KEY
```
    See Also:
    
    Constant Field Values
  - MOB_COMPACTION_THREADS_MAX
```
public static final String MOB_COMPACTION_THREADS_MAX
```
    The max number of threads used in MobCompactor.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_MOB_COMPACTION_THREADS_MAX
```
public static final int DEFAULT_MOB_COMPACTION_THREADS_MAX
```
    See Also:
    
    Constant Field Values

Class MobConstants

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

MOB_SCAN_RAW

MOB_CACHE_BLOCKS

MOB_SCAN_REF_ONLY

EMPTY_VALUE_ON_MOBCELL_MISS

MOB_FILE_CACHE_SIZE_KEY

DEFAULT_MOB_FILE_CACHE_SIZE

MOB_DIR_NAME

MOB_REGION_NAME

MOB_REGION_NAME_BYTES

MOB_CLEANER_PERIOD

DEFAULT_MOB_CLEANER_PERIOD

MOB_CACHE_EVICT_PERIOD

MOB_CACHE_EVICT_REMAIN_RATIO

MOB_REF_TAG

DEFAULT_EVICT_REMAIN_RATIO

DEFAULT_MOB_CACHE_EVICT_PERIOD

TEMP_DIR_NAME

BULKLOAD_DIR_NAME

MOB_TABLE_LOCK_SUFFIX

EMPTY_STRING

MOB_COMPACTION_MERGEABLE_THRESHOLD

DEFAULT_MOB_COMPACTION_MERGEABLE_THRESHOLD

MOB_DELFILE_MAX_COUNT

DEFAULT_MOB_DELFILE_MAX_COUNT

MOB_COMPACTION_BATCH_SIZE

DEFAULT_MOB_COMPACTION_BATCH_SIZE

MOB_COMPACTION_CHORE_PERIOD

DEFAULT_MOB_COMPACTION_CHORE_PERIOD

MOB_COMPACTOR_CLASS_KEY

MOB_COMPACTION_THREADS_MAX

DEFAULT_MOB_COMPACTION_THREADS_MAX