static class HFileBlockIndex.ByteArrayKeyBlockIndexReader extends HFileBlockIndex.BlockIndexReader
Modifier and Type | Field and Description |
---|---|
private byte[][] |
blockKeys |
blockDataSizes, blockOffsets, midKeyEntry, midLeafBlockOffset, midLeafBlockOnDiskSize, rootCount, searchTreeLevel
Constructor and Description |
---|
ByteArrayKeyBlockIndexReader(int treeLevel) |
Modifier and Type | Method and Description |
---|---|
protected void |
add(byte[] key,
long offset,
int dataSize) |
protected long |
calculateHeapSizeForBlockKeys(long heapSize) |
byte[] |
getRootBlockKey(int i)
n * from 0 to
- 1 |
protected void |
initialize(int numEntries) |
boolean |
isEmpty()
Returns true if the block index is empty.
|
BlockWithScanInfo |
loadDataBlockWithScanInfo(Cell key,
HFileBlock currentBlock,
boolean cacheBlocks,
boolean pread,
boolean isCompaction,
DataBlockEncoding expectedDataBlockEncoding,
HFile.CachingBlockReader cachingBlockReader)
Return the BlockWithScanInfo, a data structure which contains the Data HFileBlock with other
scan info such as the key that starts the next HFileBlock.
|
Cell |
midkey(HFile.CachingBlockReader cachingBlockReader)
An approximation to the
HFile 's mid-key. |
int |
rootBlockContainingKey(byte[] key,
int offset,
int length,
CellComparator comp)
Finds the root-level index block containing the given key.
|
int |
rootBlockContainingKey(Cell key)
Finds the root-level index block containing the given key.
|
String |
toString() |
binarySearchNonRootIndex, ensureNonEmpty, getNonRootIndexedKey, getRootBlockCount, getRootBlockDataSize, getRootBlockOffset, heapSize, locateNonRootIndexEntry, readMultiLevelIndexRoot, readRootIndex, readRootIndex, rootBlockContainingKey, seekToDataBlock
private byte[][] blockKeys
public ByteArrayKeyBlockIndexReader(int treeLevel)
protected long calculateHeapSizeForBlockKeys(long heapSize)
calculateHeapSizeForBlockKeys
in class HFileBlockIndex.BlockIndexReader
public boolean isEmpty()
HFileBlockIndex.BlockIndexReader
isEmpty
in class HFileBlockIndex.BlockIndexReader
public byte[] getRootBlockKey(int i)
- 1
public BlockWithScanInfo loadDataBlockWithScanInfo(Cell key, HFileBlock currentBlock, boolean cacheBlocks, boolean pread, boolean isCompaction, DataBlockEncoding expectedDataBlockEncoding, HFile.CachingBlockReader cachingBlockReader) throws IOException
HFileBlockIndex.BlockIndexReader
loadDataBlockWithScanInfo
in class HFileBlockIndex.BlockIndexReader
key
- the key we are looking forcurrentBlock
- the current block, to avoid re-reading the same blockexpectedDataBlockEncoding
- the data block encoding the caller is expecting the data
block to be in, or null to not perform this check and return
the block irrespective of the encoding.IOException
public Cell midkey(HFile.CachingBlockReader cachingBlockReader) throws IOException
HFileBlockIndex.BlockIndexReader
HFile
's mid-key. Operates on block boundaries, and does not
go inside blocks. In other words, returns the first key of the middle block of the file.midkey
in class HFileBlockIndex.BlockIndexReader
IOException
protected void initialize(int numEntries)
initialize
in class HFileBlockIndex.BlockIndexReader
protected void add(byte[] key, long offset, int dataSize)
add
in class HFileBlockIndex.BlockIndexReader
public int rootBlockContainingKey(byte[] key, int offset, int length, CellComparator comp)
HFileBlockIndex.BlockIndexReader
rootBlockContainingKey
in class HFileBlockIndex.BlockIndexReader
key
(between 0 and the number of blocks - 1)
or -1 if this file does not contain the request.public int rootBlockContainingKey(Cell key)
HFileBlockIndex.BlockIndexReader
rootBlockContainingKey
in class HFileBlockIndex.BlockIndexReader
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