Constructor Detail

• HFileReaderV3.ScannerV3

  public HFileReaderV3.ScannerV3(HFileReaderV3 r,
                         boolean cacheBlocks,
                         boolean pread,
                         boolean isCompaction)

Method Detail

• getCellBufSize

  protected int getCellBufSize()

  Overrides:

  getCellBufSize in class HFileReaderV2.ScannerV2

• getKeyValue

  public Cell getKeyValue()

  Specified by:

  getKeyValue in interface HFileScanner

  Overrides:

  getKeyValue in class HFileReaderV2.ScannerV2

  Returns:

  Instance of KeyValue.

• setNonSeekedState

  protected void setNonSeekedState()

  Overrides:

  setNonSeekedState in class HFileReaderV2.ScannerV2

• getNextCellStartPosition

  protected int getNextCellStartPosition()

  Overrides:

  getNextCellStartPosition in class HFileReaderV2.ScannerV2

• readKeyValueLen

  protected final void readKeyValueLen()

  Overrides:

  readKeyValueLen in class HFileReaderV2.ScannerV2

• blockSeek

  protected int blockSeek(Cell key,
              boolean seekBefore)

  Within a loaded block, seek looking for the last key that is smaller than (or equal to?) the key we are interested in. A note on the seekBefore: if you have seekBefore = true, AND the first key in the block = key, then you'll get thrown exceptions. The caller has to check for that case and load the previous block as appropriate.

  Overrides:

  blockSeek in class HFileReaderV2.ScannerV2

  Parameters:

  key - the key to find

  seekBefore - find the key before the given key in case of exact match.

  Returns:

  0 in case of an exact key match, 1 in case of an inexact match, -2 in case of an inexact match and furthermore, the input key less than the first key of current block(e.g. using a faked index key)