"
This patchset adds support for writing Statistics.db in the SSTables
'mc' (3.x) format. This file is essential for reading data stored in
Data.db as it contains base values used for delta encoding and types of
columns.
This patchset also fixes several bugs found in writing data and index
files as well as bugs in a statistics-related structure definition.
Tests: unit {debug, release}
All SSTables files for write unit tests are validated to be processed by
sstabledump and output is verified to show the expected data.
"
* 'projects/sstables-30/write-statistics/v1' of https://github.com/argenet/scylla:
Add test covering the composite partition key case.
Add Statistics.db files to write tests for SSTables 3.0.
Do not check rows and cells for expiration when writing them to the data file.
Fix promoted index serialization.
Fix the order of items in stats_metadata.
Fix timestamp_epoch value which was truncated on exceeding int32_t type limit.
Write serialization header to Statistics.db for SSTables 3.x.
Do not pass schema to metadata_collector::update(column_stats)
Collect metadata statistics when writing SSTables 3.0.
Call get_metadata_collector() instead of referencing sstable::_collector directly.
Fix logic of writing TTLed cells in SSTable 3.0 format.
Separate statistics for count of cells, columns and rows in column_stats.
Deserialize collection in a way that doesn't incur shared_ptr counter increment and is generally shorter.
Track both min & max values for timestamp, TTL and local deletion time in metadata_collector.
Add class for tracking both extremum values (min and max) on updates.
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