database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-08-01 06:27:03 +03:00
Code Activity

When committing a WAL transaction, do not write any pages to the WAL file with page numbers greater than the size of the database image in pages.

Browse Source 
FossilOrigin-Name: 311d0b613d9cfa2dbcbb9ef2450041b1fd48770a
This commit is contained in:
dan
2011-04-05 16:09:08 +00:00
parent 0d8bba982d
commit ce8e5ffe1c
4 changed files with 73 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
test/wal.test
View File

@ -19,6 +19,8 @@ source $testdir/lock_common.tcl
source $testdir/malloc_common.tcl
source $testdir/wal_common.tcl
set testprefix wal
ifcapable !wal {finish_test ; return }
proc reopen_db {} {
@ -1504,6 +1506,54 @@ do_test wal-23.4 {
set ::log
} [list SQLITE_OK "Recovered $nPage frames from WAL file $walfile"]
ifcapable autovacuum {
# This block tests that if the size of a database is reduced by a
# transaction (because of an incremental or auto-vacuum), that no
# data is written to the WAL file for the truncated pages as part
# of the commit. e.g. if a transaction reduces the size of a database
# to N pages, data for page N+1 should not be written to the WAL file
# when committing the transaction. At one point such data was being
# written.
#
catch {db close}
forcedelete test.db
sqlite3 db test.db
do_execsql_test 24.1 {
PRAGMA auto_vacuum = 2;
PRAGMA journal_mode = WAL;
PRAGMA page_size = 1024;
CREATE TABLE t1(x);
INSERT INTO t1 VALUES(randomblob(5000));
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
} {wal}
do_execsql_test 24.2 {
DELETE FROM t1;
PRAGMA wal_checkpoint;
} {0 109 109}
do_test 24.3 {
db close
sqlite3 db test.db
file exists test.db-wal
} 0
do_test 24.4 {
file size test.db
} [expr 84 * 1024]
do_test 24.5 {
execsql {
PRAGMA incremental_vacuum;
PRAGMA wal_checkpoint;
}
file size test.db
} [expr 3 * 1024]
do_test 24.6 {
file size test.db-wal
} 2128
}
db close
sqlite3_shutdown
test_sqlite3_log