PARTITION BY SYSTEM_TIME INTERVAL ...

Lots of changes:
* calculate the current history partition in ::external_lock(),
  not in ::write_row() or ::update_row()
* remove dynamically collected per-partition row_end stats
* no full table scan in open_table_from_share to calculate these
  stats, no manual MDL/thr_locks in open_table_from_share
* no shared stats in TABLE_SHARE = no mutexes or condition waits when
  calculating current history partition
* always compare timestamps, don't convert them to MYSQL_TIME
  (avoid DST ambiguity, and it's faster too)
* correct interval handling, 1 month = 1 month, not 30 * 24 * 3600 seconds
* save/restore first partition start time, and count intervals from there
* only allow to drop first partitions if INTERVAL
* when adding new history partitions, split the data in the last history
  parition, if it was overflowed
* show partition boundaries in INFORMATION_SCHEMA.PARTITIONS

1 files changed, 0 insertions, 2 deletions

diff --git a/mysql-test/suite/versioning/r/truncate.result b/mysql-test/suite/versioning/r/truncate.result
index 68f37aaf4ef..33f21d6245b 100644
--- a/mysql-test/suite/versioning/r/truncate.result
+++ b/mysql-test/suite/versioning/r/truncate.result
@@ -56,8 +56,6 @@ partition pn current);
 insert into t values (1);
 update t set a= 2;
 update t set a= 3;
-Warnings:
-Note	4114	Versioned table `test`.`t`: switching from partition `p0` to `p1`
 delete history from t;
 select * from t for system_time all;
 a