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* Boldly make SQLite WAL mode the default again. Hopefully the 

intermittent problems are gone by now.  WAL mode is preferrable
  because it does way fewer fsyncs.
This commit is contained in:
Eelco Dolstra 2011-11-07 21:11:59 +00:00
parent a6a3f3a8c2
commit c0b706213d
2 changed files with 4 additions and 5 deletions
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2
configure.ac
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@ -255,7 +255,7 @@ AC_ARG_WITH(sqlite, AC_HELP_STRING([--with-sqlite=PATH],
[prefix of SQLite]), [prefix of SQLite]),
sqlite=$withval, sqlite=) sqlite=$withval, sqlite=)
AM_CONDITIONAL(HAVE_SQLITE, test -n "$sqlite") AM_CONDITIONAL(HAVE_SQLITE, test -n "$sqlite")
SQLITE_VERSION=3070701 SQLITE_VERSION=3070900
AC_SUBST(SQLITE_VERSION) AC_SUBST(SQLITE_VERSION)
if test -z "$sqlite"; then if test -z "$sqlite"; then
sqlite_lib='${top_builddir}/externals/sqlite-autoconf-$(SQLITE_VERSION)/libsqlite3.la' sqlite_lib='${top_builddir}/externals/sqlite-autoconf-$(SQLITE_VERSION)/libsqlite3.la'

7
src/libstore/local-store.cc
View File

@ -327,10 +327,9 @@ void LocalStore::openDB(bool create)
if (sqlite3_exec(db, ("pragma synchronous = " + syncMode + ";").c_str(), 0, 0, 0) != SQLITE_OK) if (sqlite3_exec(db, ("pragma synchronous = " + syncMode + ";").c_str(), 0, 0, 0) != SQLITE_OK)
throwSQLiteError(db, "setting synchronous mode"); throwSQLiteError(db, "setting synchronous mode");
/* Set the SQLite journal mode. WAL mode is fastest, but doesn't /* Set the SQLite journal mode. WAL mode is fastest, so it's the
seem entirely stable at the moment (Oct. 2010). Thus, use default. */
truncate mode by default. */ string mode = queryBoolSetting("use-sqlite-wal", true) ? "wal" : "truncate";
string mode = queryBoolSetting("use-sqlite-wal", false) ? "wal" : "truncate";
string prevMode; string prevMode;
{ {
SQLiteStmt stmt; SQLiteStmt stmt;