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Overview
| Comment: | Ensure pointer map entries are always added when a row that does use overflow pages replaces one that does not in an auto-vacuum database. Fix for [fda22108]. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: | b30dfba811cb531b09ff2e71a1a18ed5 |
| User & Date: | dan 2017-06-08 11:14:08 |
Context
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2017-06-12
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| 23:44 | Ensure pointer map entries are always added when a row that does use overflow pages replaces one that does not in an auto-vacuum database. Fix for [fda22108]. check-in: 30c50f0e user: drh tags: branch-3.18 | |
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2017-06-08
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| 14:35 | Add a testcase() to confirm that an OOM on sqlite3DbStrNDup() is handled correctly in trigger.c. check-in: 343e5599 user: drh tags: trunk | |
| 11:26 | Ensure pointer map entries are always added when a row that does use overflow pages replaces one that does not in an auto-vacuum database. Fix for [fda22108]. check-in: 9478106c user: drh tags: branch-3.19 | |
| 11:14 | Ensure pointer map entries are always added when a row that does use overflow pages replaces one that does not in an auto-vacuum database. Fix for [fda22108]. check-in: b30dfba8 user: dan tags: trunk | |
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2017-06-07
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| 22:32 | In SQLITE_DEBUG mode, attempt to log the page number of the database that contained the problem when SQLITE_CORRUPT errors are seen. check-in: e39795d7 user: drh tags: trunk | |
Changes
Changes to src/btree.c.
8169 8170 8171 8172 8173 8174 8175 8176 8177 8178 8179 8180 8181 8182 8183 8184 8185 8186 8187 8188 |
goto end_insert;
}
oldCell = findCell(pPage, idx);
if( !pPage->leaf ){
memcpy(newCell, oldCell, 4);
}
rc = clearCell(pPage, oldCell, &info);
if( info.nSize==szNew && info.nLocal==info.nPayload ){
/* Overwrite the old cell with the new if they are the same size.
** We could also try to do this if the old cell is smaller, then add
** the leftover space to the free list. But experiments show that
** doing that is no faster then skipping this optimization and just
** calling dropCell() and insertCell(). */
assert( rc==SQLITE_OK ); /* clearCell never fails when nLocal==nPayload */
if( oldCell+szNew > pPage->aDataEnd ) return SQLITE_CORRUPT_BKPT;
memcpy(oldCell, newCell, szNew);
return SQLITE_OK;
}
dropCell(pPage, idx, info.nSize, &rc);
if( rc ) goto end_insert;
|
| > > | > > > > |
8169 8170 8171 8172 8173 8174 8175 8176 8177 8178 8179 8180 8181 8182 8183 8184 8185 8186 8187 8188 8189 8190 8191 8192 8193 8194 |
goto end_insert;
}
oldCell = findCell(pPage, idx);
if( !pPage->leaf ){
memcpy(newCell, oldCell, 4);
}
rc = clearCell(pPage, oldCell, &info);
if( info.nSize==szNew && info.nLocal==info.nPayload
&& (!ISAUTOVACUUM || szNew<pPage->minLocal)
){
/* Overwrite the old cell with the new if they are the same size.
** We could also try to do this if the old cell is smaller, then add
** the leftover space to the free list. But experiments show that
** doing that is no faster then skipping this optimization and just
** calling dropCell() and insertCell().
**
** This optimization cannot be used on an autovacuum database if the
** new entry uses overflow pages, as the insertCell() call below is
** necessary to add the PTRMAP_OVERFLOW1 pointer-map entry. */
assert( rc==SQLITE_OK ); /* clearCell never fails when nLocal==nPayload */
if( oldCell+szNew > pPage->aDataEnd ) return SQLITE_CORRUPT_BKPT;
memcpy(oldCell, newCell, szNew);
return SQLITE_OK;
}
dropCell(pPage, idx, info.nSize, &rc);
if( rc ) goto end_insert;
|
Changes to test/autovacuum.test.
701 702 703 704 705 706 707 708 709 |
execsql { INSERT INTO t1 SELECT NULL, randstr(50,50) FROM t1 }
} {}
do_test autovacuum-9.5 {
execsql { DELETE FROM t1 WHERE rowid > (SELECT max(a)/2 FROM t1) }
file size test.db
} $::sqlite_pending_byte
finish_test
|
> > > > > > > |
701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 |
execsql { INSERT INTO t1 SELECT NULL, randstr(50,50) FROM t1 }
} {}
do_test autovacuum-9.5 {
execsql { DELETE FROM t1 WHERE rowid > (SELECT max(a)/2 FROM t1) }
file size test.db
} $::sqlite_pending_byte
do_execsql_test autovacuum-10.1 {
DROP TABLE t1;
CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
INSERT INTO t1 VALUES(25, randomblob(104));
REPLACE INTO t1 VALUES(25, randomblob(1117));
PRAGMA integrity_check;
} {ok}
finish_test
|