cassandra storage format notes

gistfile1.txt

# https://github.com/apache/cassandra/blob/cassandra-3.0/src/java/org/apache/cassandra/io/sstable/format/big/BigTableWriter.java#L135

# UnfilteredRowIteratorSerializer
https://github.com/apache/cassandra/blob/cassandra-3.0/src/java/org/apache/cassandra/db/rows/UnfilteredRowIteratorSerializer.java#L34-34

Partition Header: <key><flags><s_header>[<partition_deletion>][<static_row>][<row_estimate>]
Then the rows


https://github.com/apache/cassandra/blob/cassandra-3.0/src/java/org/apache/cassandra/db/rows/BufferCell.java#L200-200

    /**
     * The serialization format for cell is:
     *     [ flags ][ timestamp ][ deletion time ][    ttl    ][ path size ][ path ][ value size ][ value ]
     *     [   1b  ][ 8b (vint) ][   4b (vint)   ][ 4b (vint) ][ 4b (vint) ][  arb ][  4b (vint) ][  arb  ]
     *
     * where not all field are always present (in fact, only the [ flags ] are guaranteed to be present). The fields have the following
     * meaning:
     *   - [ flags ] is the cell flags. It is a byte for which each bit represents a flag whose meaning is explained below (*_MASK constants)
     *   - [ timestamp ] is the cell timestamp. Present unless the cell has the USE_TIMESTAMP_MASK.
     *   - [ deletion time]: the local deletion time for the cell. Present if either the cell is deleted (IS_DELETED_MASK)
     *       or it is expiring (IS_EXPIRING_MASK) but doesn't have the USE_ROW_TTL_MASK.
     *   - [ ttl ]: the ttl for the cell. Present if the row is expiring (IS_EXPIRING_MASK) but doesn't have the
     *       USE_ROW_TTL_MASK.
     *   - [ value size ] is the size of the [ value ] field. It's present unless either the cell has the HAS_EMPTY_VALUE_MASK, or the value
     *       for columns of this type have a fixed length.
     *   - [ path size ] is the size of the [ path ] field. Present iff this is the cell of a complex column.
     *   - [ value ]: the cell value, unless it has the HAS_EMPTY_VALUE_MASK.
     *   - [ path ]: the cell path if the column this is a cell of is complex.
     */