/**
* Get the chunk for the given position.
*
* @param pos the position
* @return the chunk
*/
private BTreeChunk getChunk(long pos) {
int chunkId = DataUtils.getPageChunkId(pos);
BTreeChunk c = chunks.get(chunkId);
if (c == null) c = readChunkHeader(chunkId);
if (c == null)
throw DataUtils.newIllegalStateException(
DataUtils.ERROR_FILE_CORRUPT, "Chunk {0} not found", chunkId);
return c;
}
