Changeset: 1a720f2abd29 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/1a720f2abd29
Modified Files:
sql/storage/bat/bat_storage.c
Branch: Jun2020
Log Message:
fixing loss of column content in a sequence of truncate/delete all, with large
inserts/copy into's, under heavy concurrent workloads.
diffs (35 lines):
diff --git a/sql/storage/bat/bat_storage.c b/sql/storage/bat/bat_storage.c
--- a/sql/storage/bat/bat_storage.c
+++ b/sql/storage/bat/bat_storage.c
@@ -2370,6 +2370,7 @@ tr_handle_snapshot( sql_trans *tr, sql_d
bat->bid = bat->ibid;
bat->cnt = bat->ibase = BATcount(ins);
bat->ibid = e_bat(ins->ttype);
+ bat->cleared = 0;
BATmsync(ins);
}
bat_destroy(ins);
@@ -2406,7 +2407,7 @@ tr_update_delta( sql_trans *tr, sql_delt
if(!cur)
return LOG_ERR;
}
- if (!obat->bid && tr != gtrans) {
+ if ((!obat->bid || !cbat->bid) && tr != gtrans) {
if (obat->next)
destroy_bat(obat->next);
destroy_delta(obat);
@@ -2418,6 +2419,14 @@ tr_update_delta( sql_trans *tr, sql_delt
cbat->cleared = 0;
cbat->name = NULL;
cbat->cached = NULL;
+ if (!obat->bid) {
+ cur = temp_descriptor(obat->ibid);
+ obat->bid = obat->ibid;
+ obat->cnt = obat->ibase = BATcount(cur);
+ obat->ibid = e_bat(cur->ttype);
+ bat_destroy(cur);
+ obat->cleared = 0;
+ }
return ok;
}
ins = temp_descriptor(cbat->ibid);
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