"
This patchset adds support for writing counter cells in SSTables 3.x
format ('m'). The logic of writing counters is almost identical to that
used for the old 2.x format ('k'/'l') with the only difference that the
data length preceding serialised shards is written as a vint.
Tests: unit {release}.
Generated SSTables are verified to be processed fine by sstabledump
(note that sstabledump only outputs the binary data for counters, not
their actual values, same as sstable2json).
Verified with Cassandra 3.11 to get the expected values from the
counters table:
cqlsh> SELECT * from sst3.counter_table;
pk | ck | rc1 | rc2
-----+-----+-----+-----
key | ck1 | 10 | 1
(1 rows)
Verified that the deleted counter can no longer be updated:
cqlsh> use sst3 ;
cqlsh:sst3> UPDATE counter_table SET rc1 = rc1 + 2 WHERE pk = 'key' AND ck = 'ck2';
cqlsh:sst3> SELECT * from sst3.counter_table;
pk | ck | rc1 | rc2
-----+-----+-----+-----
key | ck1 | 10 | 1
(1 rows)
"
* 'projects/sstables-30/write_counters/v1' of https://github.com/argenet/scylla:
tests: Unit tests to cover writing counters in SSTables 3.x format.
sstables: Support writing counters for SSTables 3.x.
sstables: Move code writing counter value into a separate helper.
832e8fb1e0