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Overview
| Comment: | If "PRAGMA integrity_check" is run while the database is being written by a CONCURRENT transaction, do not consider unreferenced pages to be an error. They may be part of the free-page list, which is not visible at the b-tree layer when running a CONCURRENT transaction. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | begin-concurrent |
| Files: | files | file ages | folders |
| SHA1: |
f32b57b49311693eb0c0c9f6f14859e7 |
| User & Date: | dan 2015-08-25 17:16:33 |
| Wiki: | begin-concurrent |
Context
|
2015-08-25
| ||
| 19:10 | Add miscellaneous test cases for concurrent transactions. check-in: 779b1d0e user: dan tags: begin-concurrent | |
| 17:16 | If "PRAGMA integrity_check" is run while the database is being written by a CONCURRENT transaction, do not consider unreferenced pages to be an error. They may be part of the free-page list, which is not visible at the b-tree layer when running a CONCURRENT transaction. check-in: f32b57b4 user: dan tags: begin-concurrent | |
| 16:01 | Test that if a corrupt wal-index header is encountered when attempting to commit a concurrent transaction, SQLITE_BUSY_SNAPSHOT is returned to the caller. check-in: c746e0bd user: dan tags: begin-concurrent | |
Changes
Changes to src/btree.c.
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checkPtrmap(&sCheck, aRoot[i], PTRMAP_ROOTPAGE, 0);
}
#endif
checkTreePage(&sCheck, aRoot[i], ¬Used, LARGEST_INT64);
}
pBt->db->flags = savedDbFlags;
/* Make sure every page in the file is referenced
*/
for(i=1; i<=sCheck.nPage && sCheck.mxErr; i++){
#ifdef SQLITE_OMIT_AUTOVACUUM
if( getPageReferenced(&sCheck, i)==0 ){
checkAppendMsg(&sCheck, "Page %d is never used", i);
}
#else
/* If the database supports auto-vacuum, make sure no tables contain
** references to pointer-map pages.
|
| | > > | |
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checkPtrmap(&sCheck, aRoot[i], PTRMAP_ROOTPAGE, 0);
}
#endif
checkTreePage(&sCheck, aRoot[i], ¬Used, LARGEST_INT64);
}
pBt->db->flags = savedDbFlags;
/* Make sure every page in the file is referenced. Skip this if the
** database is currently being written by a CONCURRENT transaction (it
** may fail as pages that were part of the free-list when the transaction
** was opened cannot be counted). */
for(i=1; ISCONCURRENT==0 && i<=sCheck.nPage && sCheck.mxErr; i++){
#ifdef SQLITE_OMIT_AUTOVACUUM
if( getPageReferenced(&sCheck, i)==0 ){
checkAppendMsg(&sCheck, "Page %d is never used", i);
}
#else
/* If the database supports auto-vacuum, make sure no tables contain
** references to pointer-map pages.
|
Changes to test/concurrent2.test.
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SELECT * FROM t1;
ROLLBACK;
} {1 2 3 4 5 6 7 8}
do_execsql_test 7.3.2 {
SELECT * FROM t1;
} {1 2 3 4}
finish_test
|
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SELECT * FROM t1;
ROLLBACK;
} {1 2 3 4 5 6 7 8}
do_execsql_test 7.3.2 {
SELECT * FROM t1;
} {1 2 3 4}
#-------------------------------------------------------------------------
# Test that "PRAGMA integrity_check" works within a concurrent
# transaction. Within a concurrent transaction, "PRAGMA integrity_check"
# is unable to detect unused database pages, but can detect other types
# of corruption.
#
reset_db
do_execsql_test 8.1 {
PRAGMA journal_mode = wal;
CREATE TABLE kv(k INTEGER PRIMARY KEY, v UNIQUE);
INSERT INTO kv VALUES(NULL, randomblob(750));
INSERT INTO kv SELECT NULL, randomblob(750) FROM kv;
INSERT INTO kv SELECT NULL, randomblob(750) FROM kv;
INSERT INTO kv SELECT NULL, randomblob(750) FROM kv;
INSERT INTO kv SELECT NULL, randomblob(750) FROM kv;
INSERT INTO kv SELECT NULL, randomblob(750) FROM kv;
DELETE FROM kv WHERE rowid%2;
PRAGMA freelist_count;
} {wal 33}
do_execsql_test 8.2 { PRAGMA integrity_check } ok
do_execsql_test 8.3 {
BEGIN CONCURRENT;
PRAGMA integrity_check;
} {ok}
do_execsql_test 8.4 {
INSERT INTO kv VALUES(1100, 1100);
PRAGMA integrity_check;
} {ok}
do_execsql_test 8.5 {
COMMIT;
PRAGMA integrity_check;
} {ok}
finish_test
|