BlockCache (Apache Accumulo Core 1.10.4 API)

All Known Implementing Classes:

LruBlockCache
```
public interface BlockCache
```
Block cache interface.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`CacheEntry`	`cacheBlock(String blockName, byte[] buf)`	Add block to cache (defaults to not in-memory).
`CacheEntry`	`cacheBlock(String blockName, byte[] buf, boolean inMemory)`	Add block to cache.
`CacheEntry`	`getBlock(String blockName)`	Fetch block from cache.
`CacheEntry`	`getBlockNoStats(String blockName)`
`Lock`	`getLoadLock(String blockName)`	Return a lock used for loading data not in the cache.
`long`	`getMaxSize()`	Get the maximum size of this cache.

- Method Detail
  - cacheBlock
```
CacheEntry cacheBlock(String blockName,
                      byte[] buf,
                      boolean inMemory)
```
    Add block to cache.
    
    Parameters:
    
    blockName - Zero-based file block number.
    
    buf - The block contents wrapped in a ByteBuffer.
    
    inMemory - Whether block should be treated as in-memory
  - cacheBlock
```
CacheEntry cacheBlock(String blockName,
                      byte[] buf)
```
    Add block to cache (defaults to not in-memory).
    
    Parameters:
    
    blockName - Zero-based file block number.
    
    buf - The block contents wrapped in a ByteBuffer.
  - getBlock
```
CacheEntry getBlock(String blockName)
```
    Fetch block from cache.
    
    Parameters:
    
    blockName - Block number to fetch.
    
    Returns:
    
    Block or null if block is not in the cache.
  - getBlockNoStats
```
CacheEntry getBlockNoStats(String blockName)
```
  - getMaxSize
```
long getMaxSize()
```
    Get the maximum size of this cache.
    
    Returns:
    
    max size in bytes
  - getLoadLock
```
Lock getLoadLock(String blockName)
```
    Return a lock used for loading data not in the cache. Should always return the same lock for the same block name. Can return different locks for different block names. Its ok to return null if locking is not desired.