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|12:13||If a single page is written to the wal file more than once, instead of appending the second and subsequent copy to the wal file, overwrite the first. Update: See the important bug fix at [f694e60a]! check-in: d493d4f1 user: dan tags: trunk|
|08:12||Add a test case to waloverwrite.test to check that savepoint rollback does not cause a problem. Closed-Leaf check-in: 87dae56c user: dan tags: wal-overwrite-frames|
|00:52||Improved testability. check-in: e83d3a2a user: drh tags: wal-overwrite-frames|
|23:55||All WAL frame overwrites even if there are active savepoints. This is safe because a ROLLBACK TO will cause all reverted pages to be rewritten to the WAL file prior to COMMIT. check-in: 99b31a6b user: drh tags: wal-overwrite-frames|
|18:57||If it is known that checksums will be recalculated on transaction commit, skip calculating checksums when appending frames to the wal file. When recalculating checksums, recalculate them starting with the first overwritten frame - not the first frame in the transaction. check-in: 16b34f25 user: dan tags: wal-overwrite-frames|
|16:39||If a single page is written to the wal file more than once, have each subsequent copy overwrite the original frame. check-in: 5d113aef user: dan tags: wal-overwrite-frames|
|22:31||Typo fix in the previous commit. check-in: 52c16603 user: drh tags: trunk|