[tarantool-patches] Re: [PATCH 0/5] Strong sequentially LSN in journal
Georgy Kirichenko
georgy at tarantool.org
Fri Jan 11 16:31:45 MSK 2019
Branch: https://github.com/tarantool/tarantool/tree/g.kirichenko/gh-980-disable-lsn-gaps
Issue: https://github.com/tarantool/tarantool/issues/980
On Friday, January 4, 2019 1:34:10 PM MSK you wrote:
> The patchset eliminates LSN gaps from journal what is needed for
> synchronous replication to enforce data stream consistency.
> Replicaset vclock is promoted only after write, replication row applying
> is allowed only if previous row was processed. All conflicting rows to skip
> are replacing with NOPs to fill gaps. After all vclock following
> protected with assert to ensure that this is strict one step increase.
>
> Needed for: #980
>
> Georgy Kirichenko (5):
> Do not promote wal vclock for failed writes
> Update replicaset vclock from wal
> Enforce applier out of order protection
> Emit NOP if an applier skips row
> Disallow lsn gaps while vclock following
>
> src/box/applier.cc | 113 ++++++++++++++++--------------
> src/box/box.cc | 3 +-
> src/box/replication.cc | 2 +
> src/box/replication.h | 3 +
> src/box/vclock.c | 16 ++++-
> src/box/vclock.h | 3 +
> src/box/wal.c | 57 ++++++---------
> src/box/xrow.c | 2 +-
> test/unit/vclock.cc | 10 +--
> test/xlog-py/dup_key.result | 12 +++-
> test/xlog-py/dup_key.test.py | 18 +++--
> test/xlog/errinj.result | 1 -
> test/xlog/panic_on_lsn_gap.result | 65 +++++++++--------
> 13 files changed, 167 insertions(+), 138 deletions(-)
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