Compressed node compress

Node compression operation

Compressed node recompress insert

Insert operation of uncompressed record causes a node recompression

Compressed node recompress delete

Delete operation might cause a recompression of a node

Compressed node decompress

The fill-ratio of a node has become low enough to decompress the node

Compressed node insert

Row inserted to a compressed node

Compressed node delete

Row deleted from a compressed node

Compressed node search mismatch

Search operations inside compressed node

Compressed node split

Splitting a filled compressed node to two compressed nodes

Compressed node multisplit

Compressed node multisplit

Compressed node try join

Checking the feasibility of joining two consecutive compressed nodes with low fill ratio to one compressed node. If feasible, will result to a node join.

Compressed node join

Joining two consecutive compressed nodes with low fill ratio to one compressed node

Compressed node bytes in

Number of uncompressed bytes going into compression

Compressed node bytes out

Number of compressed bytes coming out of compression. Compression rate during the interval can be calculated by formula 1 – (Compr bytes out/ Compr bytes in).