/*
* __wt_meta_track_off --
* Turn off metadata operation tracking, unrolling on error.
*/
int
__wt_meta_track_off(WT_SESSION_IMPL *session, bool need_sync, bool unroll)
{
WT_DECL_RET;
WT_META_TRACK *trk, *trk_orig;
WT_SESSION_IMPL *ckpt_session;
WT_ASSERT(session,
WT_META_TRACKING(session) && session->meta_track_nest > 0);
trk_orig = session->meta_track;
trk = session->meta_track_next;
/* If it was a nested transaction, there is nothing to do. */
if (--session->meta_track_nest != 0)
return (0);
/* Turn off tracking for unroll. */
session->meta_track_next = session->meta_track_sub = NULL;
/*
* If there were no operations logged, return now and avoid unnecessary
* metadata checkpoints. For example, this happens if attempting to
* create a data source that already exists (or drop one that doesn't).
*/
if (trk == trk_orig)
return (0);
if (unroll) {
while (--trk >= trk_orig)
WT_TRET(__meta_track_unroll(session, trk));
/* Unroll operations don't need to flush the metadata. */
return (ret);
}
/*
* If we don't have the metadata cursor (e.g, we're in the process of
* creating the metadata), we can't sync it.
*/
if (!need_sync || session->meta_cursor == NULL ||
F_ISSET(S2C(session), WT_CONN_IN_MEMORY))
goto done;
/* If we're logging, make sure the metadata update was flushed. */
if (FLD_ISSET(S2C(session)->log_flags, WT_CONN_LOG_ENABLED)) {
WT_WITH_DHANDLE(session,
WT_SESSION_META_DHANDLE(session),
ret = __wt_txn_checkpoint_log(
session, false, WT_TXN_LOG_CKPT_SYNC, NULL));
WT_RET(ret);
} else {
WT_ASSERT(session, F_ISSET(session, WT_SESSION_LOCKED_SCHEMA));
ckpt_session = S2C(session)->meta_ckpt_session;
/*
* If this operation is part of a running transaction, that
* should be included in the checkpoint.
*/
ckpt_session->txn.id = session->txn.id;
F_SET(ckpt_session, WT_SESSION_LOCKED_METADATA);
WT_WITH_METADATA_LOCK(session, ret,
WT_WITH_DHANDLE(ckpt_session,
WT_SESSION_META_DHANDLE(session),
ret = __wt_checkpoint(ckpt_session, NULL)));
F_CLR(ckpt_session, WT_SESSION_LOCKED_METADATA);
ckpt_session->txn.id = WT_TXN_NONE;
WT_RET(ret);
WT_WITH_DHANDLE(session,
WT_SESSION_META_DHANDLE(session),
ret = __wt_checkpoint_sync(session, NULL));
WT_RET(ret);
}
done: /* Apply any tracked operations post-commit. */
for (; trk_orig < trk; trk_orig++)
WT_TRET(__meta_track_apply(session, trk_orig));
return (ret);
}
/*
* __wt_meta_track_off --
* Turn off metadata operation tracking, unrolling on error.
*/
int
__wt_meta_track_off(WT_SESSION_IMPL *session, bool need_sync, bool unroll)
{
WT_DECL_RET;
WT_META_TRACK *trk, *trk_orig;
WT_SESSION_IMPL *ckpt_session;
int saved_ret;
bool did_drop;
saved_ret = 0;
WT_ASSERT(session,
WT_META_TRACKING(session) && session->meta_track_nest > 0);
trk_orig = session->meta_track;
trk = session->meta_track_next;
/* If it was a nested transaction, there is nothing to do. */
if (--session->meta_track_nest != 0)
return (0);
/* Turn off tracking for unroll. */
session->meta_track_next = session->meta_track_sub = NULL;
/*
* If there were no operations logged, skip unnecessary metadata
* checkpoints. For example, this happens if attempting to create a
* data source that already exists (or drop one that doesn't).
*/
if (trk == trk_orig)
goto err;
/* Unrolling doesn't require syncing the metadata. */
if (unroll)
goto err;
if (F_ISSET(session, WT_SESSION_SCHEMA_TXN)) {
F_CLR(session, WT_SESSION_SCHEMA_TXN);
#ifdef WT_ENABLE_SCHEMA_TXN
WT_ERR(__wt_txn_commit(session, NULL));
__wt_errx(session, "TRACK: Commit internal schema txn");
#endif
}
/*
* If we don't have the metadata cursor (e.g, we're in the process of
* creating the metadata), we can't sync it.
*/
if (!need_sync || session->meta_cursor == NULL ||
F_ISSET(S2C(session), WT_CONN_IN_MEMORY))
goto err;
/* If we're logging, make sure the metadata update was flushed. */
if (FLD_ISSET(S2C(session)->log_flags, WT_CONN_LOG_ENABLED))
WT_WITH_DHANDLE(session,
WT_SESSION_META_DHANDLE(session),
ret = __wt_txn_checkpoint_log(
session, false, WT_TXN_LOG_CKPT_SYNC, NULL));
else {
WT_ASSERT(session, F_ISSET(session, WT_SESSION_LOCKED_SCHEMA));
ckpt_session = S2C(session)->meta_ckpt_session;
/*
* If this operation is part of a running transaction, that
* should be included in the checkpoint.
*/
ckpt_session->txn.id = session->txn.id;
WT_ASSERT(session,
!F_ISSET(session, WT_SESSION_LOCKED_METADATA));
WT_WITH_DHANDLE(ckpt_session, WT_SESSION_META_DHANDLE(session),
WT_WITH_METADATA_LOCK(ckpt_session,
ret = __wt_checkpoint(ckpt_session, NULL)));
ckpt_session->txn.id = WT_TXN_NONE;
if (ret == 0)
WT_WITH_DHANDLE(session,
WT_SESSION_META_DHANDLE(session),
ret = __wt_checkpoint_sync(session, NULL));
}
err: /*
* Undo any tracked operations on failure.
* Apply any tracked operations post-commit.
*/
did_drop = false;
if (unroll || ret != 0) {
saved_ret = ret;
ret = 0;
while (--trk >= trk_orig) {
did_drop = did_drop || trk->op == WT_ST_DROP_COMMIT;
WT_TRET(__meta_track_unroll(session, trk));
}
} else
for (; trk_orig < trk; trk_orig++) {
did_drop = did_drop ||
trk_orig->op == WT_ST_DROP_COMMIT;
WT_TRET(__meta_track_apply(session, trk_orig));
}
if (F_ISSET(session, WT_SESSION_SCHEMA_TXN)) {
F_CLR(session, WT_SESSION_SCHEMA_TXN);
/*
* We should have committed above unless we're unrolling, there
* was an error or the operation was a noop.
*/
WT_ASSERT(session, unroll || saved_ret != 0 ||
session->txn.mod_count == 0);
#ifdef WT_ENABLE_SCHEMA_TXN
__wt_err(session, saved_ret,
"TRACK: Abort internal schema txn");
WT_TRET(__wt_txn_rollback(session, NULL));
#endif
}
/*
* Wake up the sweep thread: particularly for the in-memory
* storage engine, we want to reclaim space immediately.
*/
if (did_drop && S2C(session)->sweep_cond != NULL)
__wt_cond_signal(session, S2C(session)->sweep_cond);
if (ret != 0)
WT_PANIC_RET(session, ret,
"failed to apply or unroll all tracked operations");
return (saved_ret == 0 ? 0 : saved_ret);
}
